IFAE Report of Activities

IFAE Report of Activities 2005 1 2 IFAE REPORT OF ACTIVITIES 2005 1. Resum 2. Resumen 3. Summary 1 13 25 4. IFAE personnel 37 5. Institutional activities 5.1 Theses 5.2. Publications 5.3. Talks given by IFAE members 5.4. Participation in external committees 5.5. Seminars organised by the Institute 5.6. Courses, conferences, workshops with IFAE involvement 43 43 43 49 55 56 58 6. Experimental Division Scientific Activities 6.1. The ATLAS experiment 6.2. The CDF Experiment 6.3. The DES (Dark Energy Survey) Project 6.4. MAGIC 6.5. The Neutrino Experiments 6.6. X-Ray Projects 59 59 69 76 78 83 89 7. Theory Division Scientific Activities 7.1. Quantum Information Theory 7.2. Elementary Particles in Astrophysical and Cosmological Settings 7.3. Theory of the Fundamental Interactions 95 95 96 96 3 4 1. RESUM Versión en Castellano en página 13. English version on page 25. En aquesta memòria es descriuen les activitats de l'Institut de Física d'Altes Energies (IFAE) en l'any 2005. L'IFAE té també l'estatut d'Institut Universitari adscrit a la UAB. Aquesta fórmula permet al personal de l'IFAE participar en el programa docent de la UAB, en particular en els cursos de doctorat. En 2004 l'IFAE es va unir a les seves institucions fundacionals, la UAB i el DURSI, així com al CIEMAT (Centre d'Investigacions Energètiques, Mediambientals i Tecnològiques, una organització d'investigació de caràcter estatal amb seu a Madrid), per a crear i promoure el Port d'Informació Científica (PIC). Aquest centre, situat en el campus de la UAB, molt prop de l'IFAE, té com objectiu donar suport a projectes científics que requereixin l'accés distribuït a enormes quantitats de dades, tales com els futurs experiments en l'accelerador LHC del CERN. L'IFAE ha estat encarregat de la gestió administrativa del PIC per les altres institucions que formen el consorci. El PIC té el seu propi Director i Consell de Govern. Estructura de l'IFAE L'IFAE és un consorci entre la Generalitat de Catalunya i la Universitat Autònoma de Barcelona (UAB). El consorci va ser creat el 16 de juliol de 1991 pel decret 159/1991 del Govern de la Generalitat. Com a tal consorci, l'IFAE és una entitat legal amb personalitat jurídica pròpia. La relació formal amb la Generalitat es porta a terme a través del Departament d'Universitats, Investigació i Societat de la Informació (DURSI). L'IFAE integra el seu propi personal amb personal dels Grups de Física Teòrica i de Física d'Altes Energies del Departament de Física de la UAB. La llista del personal apareix en les pàgines 37 a 42. Els òrgans de govern de l'Institut són el Consell de Govern i el Director. Les línies generals d'investigació, la contractació de personal, el pressupost anual i la creació i la supressió de Divisions són algunes de les responsabilitats del Consell de Govern, el qual també designa al Director a partir d'una llista de candidats proposats pel rector de la UAB. El Director és responsable de l'execució de les decisions del Consell de Govern. Els Coordinadors de les Divisions són proposats pel director i designats pel Consell de Govern. Els membres del Consell de Govern durant 2005 figuren en la pàgina 37. Objectius de l'IFAE Tal com figura en Decret 159/1991 del Govern de la Generalitat de Catalunya, l'objectiu del l'IFAE és realitzar investigació i contribuir al desenvolupament de la Física d'Altes Energies, tant en la seva vessant teòrica com experimental. 1 Els orígens del consorci estan en el Departament de Física Teòrica i en el Laboratori de Física d'Altes Energies (LFAE) de la UAB. El grup teòric va ser establert en 1971, quan es va crear la universitat. El Laboratori de Física d'Altes Energies va ser creat en 1984, amb l'objectiu d'iniciar la investigació en aquesta disciplina en la UAB, en particular per a aprofitar de manera eficaç la pertinença al laboratori internacional CERN, després que Espanya va tornar a formar part del mateix en 1982. Com es menciona en el Decret 159/1991, l'existència del LFAE i de grups d'investigació teòrics a Catalunya, el desig de reforçar la investigació Física d'Altes Energies, en particular en el vessant experimental, i el desig de col·laborar en l'esforç del Govern espanyol per a desenvolupar aquest camp, va conduir a les autoritats de la Generalitat a crear el l'IFAE en 1991. En els anys següents la divisió experimental de l'IFAE va passar de 15 persones al personal actual consistent en aproximadament 100 persones. El programa experimental s'ha també ampliat, tant en el nombre de projectes com en la seva temàtica. En 1992 el grup estava involucrat fonamentalment en un experiment en física de partícules, l'experiment ALEPH de l'accelerador LEP del CERN, mentre que actualment hi ha quatre línies d'investigació distintes: física de partícula en col·lisionadors, amb ATLAS i CDF, física de neutrrinos, amb K2K i T2K, astrofísica d'altes energies, amb MAGIC, i física aplicada, amb el projecte de RAIGS-X. En el 2005 també es van asseure les bases per a una línia en cosmologia observacional amb el projecte DES (Dark Energy Survey) descrit més endavant. A més existeix una col·laboració molt estreta amb el Port d'Informació Científica (PIC) en els aspectes computacionals dels experiments. La Divisió Teòrica ha ampliat també el seu programa d'investigació des que l'IFAE va ser creat. En l'actualitat hi ha tres línies principals d'investigació: física de les interaccions fonamentals, astrofísica d'altes energies i informació quàntica. El fet que l'IFAE tingui personalitat jurídica pròpia li ha permès assumir la gestió dels seus propis projectes així com d'alguns projectes externs. Des de 1995 a 2001 el Laboratori de Llum Sincrotró (LLS) va estar administrativament dintre de l'IFAE. Aquest laboratori va ser l'organització que va proposar la construcció d'una Font de Llum de Sincrotró a Barcelona, un projecte aprovat tant pel govern espanyol a Madrid com pel govern de Catalunya en 2003, ara en construcció. L'IFAE va ser també la institució responsable de la construcció de l'edifici de MAGIC en el "Roque de los Muchachos" en l'Illa de La Palma i és en l'actualitat la institució responsable dels "Fons Comuns" (les despeses de funcionament i operació) de MAGIC. Des de 1999 l'IFAE ha estat també la institució responsable del seguiment, tant tècnic com administratiu, d'un contracte entre el CERN i una empresa espanyola, per a la construcció d'atuells de buit de l'Imant Toroidal del detector ATLAS, tal com s'explica més endavant en aquest capítol. 2 Una breu descripció dels projectes d'investigació de l'IFAE en les Divisions Experimental i Teòrica apareix a continuació. Una descripció més detallada apareix en els capítols 6 i 7. 1.1 La Divisió Experimental en 2005 Durant 2005 la Divisió Experimental va continuar la seva participació en cinc projectes principals: ATLAS, un experiment en preparació per al futur accelerador LHC del Centre Europeu per a la Física de Partícula (CERN), CDF, un experiment de col·lisions antiprotóprotó, que es porta a terme en Laboratori Nacional de Fermi (FNAL), en Illinois, EE.UU., K2K, un experiment d'interaccions de neutrinos que està tenint lloc a Japó, MAGIC, un experiment d'astrofísica de partícules actualment prenent dades en les Illes Canàries, i DearMama, un projecte finançat per la Unió Europea l'objectiu del qual és el desenvolupament d'un sistema digital de RAIGS-X amb alta resolució i contrast i amb una dosi de radiació baixa. K2K va finalitzar essencialment en el 2005, però l'institut es va involucrar en l'experiment de neutrinos T2K, en preparació, que tindrà també lloc a Japó. Durant el 2005 un petit grup de persones a l'IFAE es va unir a la col·laboració DES (Dark Energy Survey) la qual pretén observar i caracteritzar fotométricament uns 300 milions de galàxies visibles des de l'hemisferi austral, amb l'objectiu de mesurar quantitats rellevant en cosmologia. Tots aquests experiments són explicats breument més endavant en aquest capítol i més detalladament en un capítol posterior. ATLAS Durant l'última cambra del segle XX la Física de Partícules ha arribat a una síntesi a la qual es coneix com Model Estàndard. El Model Estàndard descriu molt bé tres de les interaccions fonamentals entre components elementals de la matèria en termes de teories quàntiques de camp: les interaccions fortes, febles i electromagnètiques. Cap resultat experimental, amb excepció de les masses no nul·les dels neutrinos, que se suposen zero en el model, està en contradicció seriosa amb la teoria. En particular, la generació d'experiments fets en col·lisionadors d'electrons i positrons, tal com l'accelerador LEP del CERN, ha sotmès al model a proves rigoroses. Però a pesar de l'enorme èxit, el Model Estàndard no és una teoria completa, doncs deixa sense resposta diverses preguntes fonamentals. El consens, que ha anat en augment durant els últims anys, és que la millor manera d'anar "més enllà del Model Estàndard" és estudiar les col·lisions entre components fonamentals de la matèria a energies molt altes. Aquest és de fet l'objectiu principal del Large Hadron Collider (LHC), accelerador actualment en construcció en el CERN. Al LHC es faran col·lisionar protons contra protons a una energia total de 14 TeV, la més alta assolida en el laboratori fins a ara. L'IFAE participa de manera important en el projecte ATLAS, un dels dos experiments amb objectius generals que es portaran a terme en el LHC. El detector ATLAS és un aparell molt complex, actualment en procés de muntatge al CERN després d'haver estat 3 construït en dotzenes de laboratoris en el món sencer. L'IFAE va ser un dels centres en els quals es va muntar un dels subdetectors més grans d' ATLAS el cridat Calorimetre Hadronic, o TileCal (les sigles de Tile Calorimetre). Aquest subdetector consisteix en tres "barrils", cadascun fet de 64 mòduls. En la primavera de 2002 l'IFAE va completar la producció a Barcelona d'un barril complet (64 mòduls, cadascun amb un pes de 12 tones, a més d'un de recanvi), una tasca que va començar en 1999. L'IFAE també va dissenyar i va fabricar l'electrònica de calibratge de TileCal (11,000 canals d'amplificació i 370 circuits de conversió digital). La producció d'aquests va ser acabada en el 2004. b) Implementació de l'algorisme del Fluix de Dades (DataFlow) i de les Tasques de Processat (PT, sigles de "Processing Tasks") del Filtre de Successos (Event Filtre). L'Event Filtre consisteix en un paquet de programs informàtics, gran i complex, que controla quals dades presos pel detector són seleccionats per a una ulterior anàlisi. En 2004 l'algorisme de Dataflow, que és un subsistema de l'Event Filtre, va ser provat en l'entorn de la presa de dades en els feixos de prova. L'IFAE és responsable de l'altre component principal del Event Filter, el PT. Aquesta part serveix d'interfaç i executa les tasques de selecció de successos PESA (“Physics Event Selection and Analysis), un paquet de programari que també serveix per a seleccionar successos off-linei al que l'IFAE contribuïx en diversos canals físics. En el 2005 es va provar la integritat i escalabilitat de tot el Event Filter, en diverses bateries formades per un gran nombre de processadors (més de 500). c) Preparació de la infrastructura de càlcul necessària per a l'experiment. d) Preparació per a la física del LHC com s'explica més detalladament més endavant en aquest informe. e) El seguiment, administrativa i tècnicament, del contracte entre el CERN i una empresa espanyola, per a la fabricació dels 8 atuells de buit de gran grandària que envolten la part central d'ATLAS. Dintre dels atuells van les bobines de l'Imant Toroidal. la instal·lació del sistema complet es va finalitzar, in situ, al 2005 (veure la figura més amunt). El primer raig còsmic registrat per el subdetector TileCal, una vegada instal·lat en la zona experimental de ATLAS al 2005. A més d'aquest treball sobre el detector mateix, l'IFAE ha estat també actiu en altres aspectes de l'experiment ATLAS, entre ells: a) Participació en l'anàlisi de les dades preses cada any des de 1993 fins a 2004 amb feixos de prova, dels mòduls del calorimetre. 4 Una vista de la caverna on està instal·lat ATLAS en el 2005. L'estructura més sobresalten són els atuells de buit de l'imant toroidal d'ATLAS, dintre de les quals van les bobines del material supeconductor. En el centre de la figura, al fons, pot veure's la "roda" central del calorimetre hadronic. CDF L'experiment CDF és en molts aspectes un precursor d'ATLAS. L'experiment té lloc en el accelerador-colisionador cridat Tevatró, situat en el Laboratori Nacional Fermi dels Estats Units, situat en Batavia, Illinois. En el Tevatró, feixos de protons i antiprotons xoquen de front amb una energia de 1 TeV per feix, produint col·lisions amb una energia total de 2 TeV. Els objectius de física són molt similars als del LHC, encara que a causa de la menor energia dels feixos potser no sigui possible arribar a l'escala a la qual apareixen nous fenòmens, més enllà del Model Estàndard. Una vista del Tevatró-Collider on té lloc l'experiment CDF. El Tevatró està situat en el Laboratori Nacional Fermi, en Batavia, Illinois, Estats Units. CDF ha estat funcionant des de principis dels anys noranta i ha produït ja molts resultats importants, entre ells el descobriment del quark top en 1995. No obstant això, la més elevada lluminositat 5 dels feixos, proporcionarà encara amidades molt importants en el futur immediat i potser nous descobriments. El Tevatró continuarà sent l'accelerador de més alta energia en el món fins a que comenci el LHC. Les oportunitats d'investigació, més els avantatges d'adquirir experiència en l'anàlisi de dades de col·lisions hadroniques, amb la vista posada en el futur LHC, van dur al IFAE a unir-se a l'experiment en 2003. El IFAE també contribueix a l'operació del detector, havent dotat a la col·laboració amb un sistema de monitoritzage de la qualitat dels dades (el Data Quality Monitor, o DQM) de manera automàtica i en temps real. Les oportunitats d'investigació, més els avantatges d'adquirir experiència en l'anàlisi de dades de col·lisions hadroniques, amb la vista posada en el futur LHC, van motivar a l'IFAE a unirse a l'experiment en 2003. En el 2005 el grup de l'IFAE ha portat a terme diverses anàlisis de física, havent-se realitzat 16 presentacions en congressos sobre els resultats. El Projecte Survey) DES (Dark Energy cúmuls de galàxies en una zona de 5000 graus quadrats de l'hemisferi sud. Aquestes mesures tenen com objectiu l'estudiar diversos aspectes de rellevància cosmològica, en particular de tractar d'amidar l'equació d'estat de l'univers. També s'observarà de manera repetitiva una zona del cel (de 40 graus quadrats) amb l'objectiu de descobrir i amidar l'espectre fotomètric d'unes 1900 Supernoves de tipus Ia, en un rang de z (desplaçament cap al vermell), 0.3 mu^+ mu^- and B^0_d -> mu^+ mu^- Decays in pp-bar Collisions with CDF II. A. Abulencia et al., The CDF Collaboration, Phys. Rev. Lett. 95, 221805 (2005), APS link, hep-ex/0508036. Search for New Physics Leading to High Mass Tau Pairs with ppbar Collisions at 1.96 TeV Using CDF II. D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 95, 131801 (2005), hepex/0506034. Search for Lambda^0_b -> p pi and Lambda^0_b -> pK Decays in ppbar Collisions at sqrt s = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. D 72, 051104(R)(2005), hepex/0507067. Measurement of the Cross Section for ttbar Production in ppbar Collisions using the Kinematics of Lepton + Jets Events. D. Acosta et al., The CDF Collaboration, Phys. Rev. D, 052003 (2005), hep-ex/0504053. Search for Scalar Leptoquark Pairs Decaying to nu nu-bar qq-bar in p anti-p Collisions at s**(1/2) = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 112001 (2005), hepex/0410076. 44 Search for ZZ and ZW Production in p anti-p Collisions at s**(1/2) = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 09115 (2005), hep-ex/050121. Measurement of the Forward-Backward Charge Asymmetry from W --> e nu Production in p anti-p Collisions at s**(1/2) = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 051104 (2005), hepex/0501023. Measurement of B(t -> Wb)/B(t -> Wq) at the Collider Detector at Fermilab D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 95, 102002 (2005), hepex/0505091. Search for Long-Lived Doubly-Charged Higgs Bosons in p anti-p Collisions at s**(1/2) = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 95, 071801 (2005), hepex/0503004. Study of Jet Shapes in Inclusive Jet Production in ppbar Collisions at sqrt s = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 112002 (2005), hepex/0505013. Measurement of the Cross Section for Prompt Diphoton Production in p anti-p Collisions at s**(1/2) = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 95, 022003 (2005), hepex/0412050. Measurement of the Moments of the Hadronic Invariant Mass Distribution in Semileptonic B Decays. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 051103 (2005), hepex/0502003. Measurement of the ttbar Production Cross Section in pp-bar Collisions at sqrt s = 1.96 TeV Using Lepton Plus Jets Events with Semileptonic B Decays to Muons. D. Acosta et al., The CDF Collaboration, Phys. Rev. D72 032002 (2005), hep-ex/0506001. First Evidence for B_s0 --> phi phi Decay and Measurements of Branching Ratio and A_CP for B+ --> phi K+. D. Acosta et al., The CDF Collaboration. Phys. Rev. Lett. 95, 031801 (2005), hepex/0502044. Measurement of the W+W- Production Cross Section in p anti-p Collisions at s**(1/2) = 1.96 TeV using Dilepton Events. D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 94, 211801 (2005), hepex/0501050. Search for Anomalous Kinematics in t anti-t Dilepton Events at CDF II. D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 95, 022001 (2005), hepex/0412042 First Measurements of Inclusive W and Z Cross Sections from Run II of the Tevatron Collider. D. Acosta et al., the CDF Collaboration, Phys. Rev. Lett. 94, 091803 (2005), hepex/0406078. Measurement of the Forward-Backward Charge Asymmetry of Electron-Positron Pairs in p anti-p Collisions at s**(1/2) = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 052002 (2005), hepex/0411059. Measurement of the t anti-t Production Cross Section in p anti-p Collisions at s**(1/2) = 1.96 TeV Using Kinematic Fitting of b-tagged Lepton + Jet Events D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 072005 (2005). Measurement of the Lifetime Difference Between B_s Mass Eigenstates. D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 94, 101803 (2005), hepex/0412057 45 Measurement of Partial Widths and Search for Direct CP Violation in D0 Meson Decays. D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 94, 122001 (2005), hepex/0504006 Measurement of the tt-bar Production Cross Section in p anti-p Collisions at s**(1/2) = 1.96 TeV using Lepton + Jets Events with Secondary Vertex b-tagging. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 052003 (2005), hepex/0410041. Search for Excited and Exotic Electrons in the e gamma Decay Channel in p anti-p Collisions at s**(1/2) = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 94, 101802 (2005), hepex/0410013. Search for Anomalous Production of Diphoton Events with Missing Transverse Energy at CDF and Limits on Gauge-Mediated Supersymmetry-Breaking Models. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 031104 (2005), hepex/0410053. Measurement of W gamma and Z gamma Production in pp-bar Collisions at s**(1/2) = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. Lett. 94, 041803 (2005), hepex/0410008 M. Martinez, "Study of Jet Properties at the Tevatron". Proceedings of Encontres de Physique de la Valle d'Aosta. La Thuile, February 2005. R. Lefevre, M. Martinez, "Inclusive Jet Cross Section at CDF". Proceedings of HEP2005 International Europhysics Conference on High Energy Physics EPS, July 21st-27th 2005, Lisboa, Portugal. R. Lefevre, "Inclusive and dijet b productions at CDF". Proceedings of XIII International Workshop on Deep Inelastic Scattering, April 27th-May 1st 2005, Madison, Wisconsin, USA. R. Lefevre, "Tevatron Results". Proceedings of XIII International Workshop on Deep Inelastic Scattering, April 27th-May 1st 2005, Madison, Wisconsin, USA. Xavier Portell. “Searches for Squarks and Gluinos” Proceedings of PANIC´05, XVII Particles and Nuclei International Conference Santa Fe, New Mexico, October 2005. Olga Norniella, " QCD results at CDF " Proceedings of 20th Annual Lake Louise Winter Institute Lake Louis, Alberta. February 2005. Measurement of the J/psi Meson and b-Hadron Production Cross Sections in p anti-p Collisions at s**(1/2) = 1960 GeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 032001 (2005), Paper. Publications of the ATLAS Group G. Blanchot, M. Cavalli-Sforza, I. Korolkov (with K. Anderson, at al.), Design of the front-end analog electronics for the ATLAS tile calorimeter. Nucl.Instrum.Meth.A551:469-476, 2005 M.Bosman with F.Gianotti et al., Physics potential and experimental challenges of the LHC luminosity upgrade Eur. Phys. J. C 39, 293-333 (2005). Search for Electroweak Single Top Quark Production in p anti-p Collisions at s**(1/2) = 1.96 TeV. D. Acosta et al., The CDF Collaboration, Phys. Rev. D71, 012005 (2005), Paper. 46 M. Dosil, F. Orellana Massive data processing for the ATLAS Combined Test Beam Proceedings of the International Conference for Computing on High Energy and Nuclear Physics, CHEP'06 Bombay, India. Dear-Mama: A Photon Counting X-ray Imaging Project for Medical Applications. To be published in Nuclear Instrumentation and Methods –A. M. Chmeissani et al. Data and Diagnostic in LISA Pathfinder. Published in ERE (Encuentros Relativistas Españoles) 2005 proceedings. A. Lobo et al. Publications of the Neutrino Group E. Aliu, S. Andringa, X. Espinal, G. Jover, E. Fernández, F. Nova, A. Rodríguez, F. Sánchez (with K2K Collaboration) Evidence for Muon Neutrino Oscillation in an Accelerator-Based Experiment. E. Aliu et al. Phys. Rev. Lett. 94:081802, 2005. E. Aliu, S. Andringa, X. Espinal, G. Jover, E. Fernández, F. Nova, A. Rodríguez, F. Sánchez (with K2K Collaboration) Search for Coherent Charged Pion Production in Neutrino-Carbon Interactions. M. Hasegawa et al. Phys. Rev. Lett. 95:252301, 2005. F.Sánchez (T2K Collaboration), Near Detector Complex for the T2K Long Baseline Experiment. Nucl.Phys.Proc.Suppl.139:295-300, 2005. Other Publications. F. Sanchez (with HERA-B Collaboration) Measurement of the J/PSI Production Cross Section in 920-GeV/c Fixed-Target ProtonNucleus Interactions. I. Abt et al. hep-ex/0512029. F. Sanchez (with HERA-B Collaboration) Improved Measurement of the B-anti-B Production Cross Section in 920-GeV/c FixedTarget Proton-Nucleus Interactions. I. Abt et al. hep-ex/0512030 J.M. Hernández, D.Ressing, V. Rybnikov, F. Sánchez, A. Amorim , M. Medinnis, P. Kreuzer, U. Schwanke HERA-B Framework for Online Calibration and Alignment. Nucl. Instrum. Meth. A546:574-583,2005* E. Fernandez, M. Martinez (with DES Collaboration) The Dark Energy Survey T. Abbot et al., Astro-ph/0510346. Publications of the X-Ray Group M. Maiorino, R. Martinez, G. Pellegrini, G. Blanchot, M. Chmeissani, J. Garcia, M. Lozano, C. Puigdengoles, M. Ullan A Read-out System for the Medipix2 Chip Capable of 500 Frames per Second. To be published in Nuclear Instrumentation and Methods -A . Charge-Sharing Observations with a CdTe Pixel Detector Irradiated with a 57Co Source. To be published in Nuclear Instrumentation and Methods -A. Direct Charge Sharing Observation in SinglePhoton Counting Pixel Detector. To be published in Nuclear Instrumentation and Methods -A . 47 Theory Division K. Osterloh, M. Baig, L. Santos, P. Zoller, M. Lewenstein “Cold Atoms in non-Abelian Gauge potentials: from the Hofstadter “moth” to lattice gauge theory. Phys.Rev.Lett. 95:010403,2005 E. Masso, J. Redondo “Evading Astrophysical Constraints on Axionlike particles”. JCAP 0509:015,2005 E. Masso, F. Rota, G.l Zsembinszki “Scalar field oscillations contributing to dark energy”. Phys.Rev.D72: 084007,2005. A. Ibarra, E. Massó, J. Redondo “Systematic Approach to Gauge-Invariant Relations between Lepton Flavor Violating Processes”. Nucl. Phys. B715:523-5354, 2005. E. Bagan, M.A. Ballester, R. Muñoz-Tapia, O. Romero-Isart “Purity Estimation with Separable Measurements”, Phys. Rev. Lett. 95:110504,2005. E. Bagan, A. Monras, R. Muñoz-Tapia “Comprehensive analysis of quantum pure-state estimation for two-level systems”. Phys.Rev.A71:062318,2005. A. Acín, E. Bagan, M. Baig, Ll. Masanes, R. Muñoz Tapia “Multiple-copy two-state discrimination with individual measurements”. Phys. Rev. A71:032338,2005. R. Muñoz-Tapia, R. Tarrach “Información Entrelazamiento y Relatividad”, Revista Española de Física 19, 51 (2005). O. Cata, M. Golterman, S. Peris “Duality Violations and Spectral sum rules”. JHEP 0508:076,2005. J. Matias “The angular distribution of B0 ---> K*0(--->KPI+)L+ L- at large recoil in and beyond the SM”. PoS HEP2005:281,2005 J. Matias, C.P. Burgess “ Msled, neutrino oscillations and the cosmological constant”, JHEP0509: 052,2005. F. Kruger, Joaquim Matias “Probing new physics via the transverse amplitudes of B0 K*0 (---> K- PI+) L+L- at large recoil”, Phys.Rev.D71:094009,2005. F. Kruger, Joaquim Matias B0(D)(T)  PI+PI- and B0(S)(T)K+Kdecays: a tool to measure new-physics parameters, Phys. Rev. D71:014024,2005. C.P. Burgess, J. Matias, F. Quevedo “Msled: a minimal supersymmetric large extra dimensions scenario”, Nucl. Phys. B706:71-99,2005. Matthias Jamin “Contour-Improved versus fixed-order perturbation theory in hadronic tau decays”, JHEP 0509:058,2005. R. Escribano “Short study of the eta-eta prime system in two mixing angle scheme”. PoS HEP2005: 418,2005. R. Escribano, J.M. Frere “Study of the eta-eta prime system in the two mixing angle scheme”, JHEP O506: 029, 2005. A. Bramon, R. Escribano and G. Garbarino “Bell’s inequality tests: From photons to Bmesons”, J. Mod. Opt. 52:1682, 2005 L. Da Rold, A. Pomarol “Chiral Symmetry breaking from five dimensional spaces”. Nucl.Phys.B721:79-97,2005 48 L. Da Rold, A. Pomarol “Chiral symmetry breaking dimensional spaces” POS (HEP2005)355. frim five A. Provenza, M. Quiros, P. Ullio, “Electroweak baryogenesis, large Yukawas and dark matter”, JHEP 0510: 048,2005 D. Diego, G. Von Gersdorff, M. Quiros, “Supersymmetry and electroweak breaking in the interval. JHEP 0511:008,2005 E. Dudas, Mariano Quiros, “Five-dimensional massive vector fields and radion stabilization”, Nucl.Phys.B721: 309-324,2005 S. Bejar, J. Guasch, J. Sola, “ Production and FCNC decay of supersymmetric Higgs bosons into heavy quarks in the LHC”. JHEP 0510:113,2005 A. Pomarol, K. Agashe, R. Contino, “The Minimal composite Higgs model” Nucl. Phys. B719:165,2005. M. Carena, A. Megevand, M. Quirós, C.E.M. Wagner “Electroweak baryogenesis and TeV fermions” Nucl. Phys. B716 (2005) 319. G.v. Gersdorff, L. Pilo, M. Quiros, A. Riotto and V. Sanz “Supersymmetry from boundary conditions”, Nucl. Phys. B712 (2005) 3. 5.3 TALKS MEMBERS GIVEN BY IFAE Test Tools for ADCs and RBs TileCal Online DAQ tools meeting CERN, Geneva, Switzerland, October 2005 2 talks on noise control during TileCal Commissioning TileCal Commissioning meetings CERN, Geneva, Switzerland, SeptemberOctober 2005 5 talks on analysis tools for TileCal Commissioning TileCal Team-5 Commissioning meetings CERN, Geneva, Switzerland, SeptemberDecember 2005 Search for supersymmetry via associated production of charginos and neutralinos in final states with tree leptons at D0 IFAE Seminar IFAE, Barcelona, Spain, June 2005 Martine Bosman The ATLAS Trigger ATLAS Physics Workshop, Rome, Italy, 6-11 June 2005 Experimental Division Sofía Andringa Results of K2K Conference New Worlds in Astroparticle Physics 2005 Faro, Portugal, 8-10 January 2005. Ulrike Blumenschein Effect of the fLVPS noise on measurements of jets TileCal Institute Board CERN, Geneva, Switzerland, December 2005 D0 Experience for ATLAS LHC Physics Workshop IFAE, Barcelona, Spain, December 2005 Overview of ATLAS performance groups LHC Physics Workshop IFAE, Barcelona, Spain, December 2005 Analysis of September pedestal data with Fourier Transform TileCal Electronics Engineering meeting CERN, Geneva, Switzerland, October 2005 49 Pilar Casado Implementation and Performance of a Tau Lepton Selection within the ATLAS Trigger system at LHC. 9th ICATPP Conf. on Astroparticle , Particle, Space Phys., Detectors and Medical Phys. Applications Villa Olmo (Italy), October 2005. Matteo Cavalli-Sforza Un sistema di ACT a grande campo: un upgrade di ARGO. Seminario Università di Roma Due (Italia), 27 January 2005 Nuevas partículas, nuevas dimensiones: la próxima frontera de las altas energías. Conferencia en curso Maratones de la Ciencia: El CERN cumple 50 años . Museo Nacional de Ciencia y Tecnología, Madrid, 17 February 2005. Quel che speriamo di scoprire al Large Hadron Collider. Coloquio Università di Palermo (Italia), 31 March 2005. Piccoli contributi a un sistema Cerenkov a grande campo a Yangbajing. Seminario Università di Roma Tre (Italia), 21 July 2005. LHC and ATLAS 2007-2009. IFAE –ATLAS Workshop on Initial LHC Physics IFAE, Universitat Autònoma de Barcelona, 20 December 2005. Carolina Deluca In situ jet calibration with Z/gamma + jets ATLAS Physics Workshop, Rome, Italy, 6-11 June 2005 Calibración de la escala de energía de los jets con sucesos fotón+jet para el detector ATLAS de LHC XXX Reunión Bienal de la Real Sociedad Española de Física Ourense, España, 12-16 September 2005 Emma de Oña First Pulsar Observation with the MAGIC telescope 29th International Cosmic Ray Conference Pune (India), August 2005. Eva Domingo A model of the diffuse gamma-ray emission from the central region of NGC 253 29th International Cosmic Ray Conference Pune (India), August 2005. Xavier Espinal Measurement of the axial vector mass in neutrino-Carbon interactions K2K Collaboration Meeting KEK, Tsukuba (Japan), June 2005 Enrique Fernández Neutrino Physics and Astrophysics. Conference New Worlds in Astroparticle Physics 2005. Faro, Portugal, 8-10 January 2005. Neutrino Physics with Accelerators. Corfu Summer Institute on Elementary Particle Physics 2005. Corfu, Greece, 4-10 September 2005. Report from PaNAGIC 25th General Assembly of IUPAP (International Union of Pure and Applied Physics). Cape Town, South Africa, 27 October 2005. Buscando nuevos horizontes (cosmológicos). Conferencia en curso Maratones de la Ciencia: El CERN cumple 50 años . Museo Nacional de Ciencia y Tecnología, Madrid, 17 February 2005. Mokhtar Chmeissani Dear-Mama Project. V Vertex2005, Nikko (Japan), November 2005. Juan Cortina Technical performance of the MAGIC telescope 29th International Cosmic Ray Conference Pune (India), August 03 - 10, 2005. Very high energy gamma ray astrophysics XXXIII International Meeting On Fundamental Physics Benasque (Spain), March 6 - 11, 2005. 50 La masa de los neutrinos. Conferencia en ciclo de Coloquios de la UAM. Universidad Autónoma de Madrid, 24 February 2005. Más allá de los átomos. Ciclo de Conferencias A. Martín Municio, Ayuntamiento de Logroño/Real Academia de Ciencias. Casa de las Ciencias, Logroño, 17 March 2005. Más allá de los átomos. Ciclo de Conferencias organizadas por Ayuntamiento de Miranda de Ebro, Burgos, y la Real Academia de Ciencias dentro del Programa de Difusión de la Cultura Científica. Casa de la Cultura, Miranda de Ebro, 5 April 2005. Más allá de los átomos. Ciclo de coloquios de la Universidad de Murcia, organizado conjuntamente por la Univ. de Murcia y la Real Academia de Ciencias dentro del Programa de Difusión de la Cultura Científica. Universidad de Murcia, 7 April de 2005. La Física de Partículas ante el nuevo gran acelerador LHC. Curso de Periodismo Científico del diario El País/Fundación BBVA. Alameda del Valle, Madrid, 19 July de 2005. Nuevos Horizontes en Física de Partículas y Cosmología Conferencia. Planetario de Madrid, Madrid, 24 de November de 2005. Algunos Megaproyectos en Física y Astrofísica de Neutrinos. Conferencia. Jornadas Científicas conjuntas de la Reales Sociedades de Física y Matermáticas Universidad de Valladolid, Valladolid, 16 de December de 2005. Neutrino Oscillations: Status and Plan Conferencia. Ciclo Trobada de Nadal Universidad de Barcelona, Barcelona, 21 de December de 2005. Ilya Korolkov Effect of the fLVPS noise on measurements of min. bias events TileCal Institute Board CERN, Geneva, Switzerland, December 2005 Top Physics in ATLAS LHC Physics Workshop IFAE, Barcelona, Spain, December 2005 Noise in the TileCal as Luminosity Monitor in ATLAS. IFAE/ATLAS group meeting IFAE, Barcelona, Spain, October 2005 TileCal as Luminosity Monitor in ATLAS. IFAE/ATLAS group meeting IFAE, Barcelona, Spain, September 2005 Using TileCal as Luminosity Monitor in ATLAS. Luminosity and Forward physics ATLAS Workshop CERN, Geneva, Switzerland, June 2005 IFAE Commitments towards Commissioning. TileCal Steering meeting IFIC, Valencia, Spain, March 2005 TileCal 6 talks on IFAE Contribution to TileCal Commissioning TileCal Commissioning meetings CERN, Geneva, Switzerland, June-October 2005 Split Super Symmetry IFAE/ATLAS group meeting IFAE, Barcelona, Spain, January 2005 Regis Lefevre Inclusive Jet Cross Section at CDF HEP, International EuroPhysics Conference on High Energy Physics Lisbone (Portugal), July 2005. Inclusive Jet Production at CDF Run II using the KT Algorithm Argonne HEP Division Seminar Argonne National Laboratory, Illinois, USA, May 2005. 51 Tevatron Results DIS´05. 13th International Workshop on Deeply Inelastic Scattering Madison, USA, April 2005 Inclusive and Dijet b Production at CDF DIS´05. 13th International Workshop on Deeply Inelastic Scattering Madison, USA, April 2005 Quark and Gluon Production Cross Section CDF Collaboration Meeting Barcelona, June 2005. Jets Production using the Kt Algorithm CDF Collaboration Meeting Fermilab, January 2005 QCD results at CDF 20th Annual Lake Louise Winter Institute Lake Louis, Alberta. February 2005. Federico Nova Coherent production of Pions in Scibar K2K Colaboration Meeting KEK, Tsukuba (Japan), June 2005. Xavier Portell Searches for Squarks and Gluinos PANIC´05, XVII Particles and Nuclei International Conference Santa Fe, New Mexico, October 2005. Search for Squark/Gluino Production in Multijets plus missing Transverse Energy Final States APS Meeting, Florida, USA, April 2005. Search for Gluino/Squark Production CDF Collaboration Meeting Barcelona, June 2005. Carles Puigdengoles Status of the Calibration Board Design IFAE/ATLAS group meeting IFAE, Barcelona, Spain, May 2005 On Preparation for CANbus commissioning IFAE/ATLAS group meeting IFAE, Barcelona, Spain, April 2005 Status of Min.Bias Monitoring System TileCal Electronics Engineering meeting CERN, Geneva, Switzerland, February 2005 Javier Rico Status first results and prospects for MAGIC IX International Conference on Topics in Astroparticle and Underground Physics Zaragoza (Spain), September 2005 Ana Rodriguez Measurement of the cross section of the single pion production in the K2K experiment in the SciBar carbon detector. K2K Collaboration Meeting KEK, Tsukuba (Japan), June 2005. Oriol Salto Search for extra-dimensions at the Tevatron EuroGRD Supersymmetry 2005 Barcelona, November 2005. Marino Maiorino A Read-out System for the Medipix2 Chip Capable of 500 Frames per Second. IWORID7, International Workshops on Radiation Imaging Detectors Grenoble (France), July 2005. Charge-Sharing Observations with a CdTe Pixel Detector Irradiated with a 57Co Source. IWORID7, International Workshops on Radiation Imaging Detectors Grenoble (France), July 2005. Mario Martinez The First Year at CDF II IFAE –ATLAS Workshop on Initial LHC Physics IFAE, Barcelona, December 2005. QCD at the Tevatron. CORFU Summer Institute for EPP. Corfu (Greece), September 2005. Studies of Jet Properties at the Tevatron XIX Rencontres de Physique de la Vallee d'Aoste La Thuile, Italy, March 2005 Olga Norniella Inclusive Jet Production using the Kt algorithm at the Tevatron CORFU Summer Institute for EPP. Corfu (Greece), September 2005. 52 Search for Gravitons in Monojet Signatures CDF Collaboration Meeting Barcelona, June 2005. Matteo Volpi Exotic Physics in ATLAS LHC Physics Workshop IFAE, Barcelona, Spain, December 2005 Integrator Tests TileCal Commissioning meetings CERN, Geneva, Switzerland, October 2005 Federico Sánchez Conceptual design of T2K neutrino experiment CIEMAT Madrid (Spain), 3 June 2005. K2K Neutrino-Carbon Coherent Pion Production. 7th International Workshop on Neutrino Factories and Superbeams Frascati (Italy) 21-26 June 2005. Neutrino physics: prospects HEP2005 International Europhysics Conference on High Energy Physics Lisboa (Portugal), 21-27 July 2005. A Time Projection Chamber For The Near Detector Of The T2K Experiment. Tracking in High Multiplicity Environments (TIME 05) Zurich (Switzerland), 3-7 October 2005. Theory Division Carla Biggio Divergences and symmtries in Higgs-Gauge unification theories 40th Rencontres de Moriond on Electroweak Interactions and Unified Theories La Thuile, Aosta Valley,Italy, 5-12 March 2005 Carlos Sánchez. Search for New Phenomena at the Tevatron WIN´05, Weak Interactions and Neutrinos. Delphi (Greece), June 2005. Leandro Da Rold Chiral symmetry breaking from five dimensional spaces International Europhysics Conference on High Energy Physics Lisboa, Portugal, 21-27 November 2005 Ester Segura Sistema de Adquisición y Selección de Datos del experimento ATLAS. Desarrollo del software del Event Filter XXX Reunión Bienal de la Real Sociedad Española de Física Ourense, España, 12-16 September 2005 Rafel Escribano Study of the eta-eta’ system in the two mixing angle scheme EURIDICE Midterm Collaboration Meeting, Frascati, Italia, 8-12 February 2005 Study of the eta-eta’ system in the two mixing angle scheme QCD 05: 12th International QCD Conference Montpellier, Francia , 4-8 July 2005 Study of the eta-eta’ system in the two mixing angle scheme HEP 2005: International Europhysics Conference on High Energy Physics Lisboa, Portugal, 21-27 July 2005 Study of the eta-eta’ system in the two mixing angle scheme PHOTON 2005: International Conference on the Structure and Interactions of the Photon Varsovia, Polonia, 31Aug-4 September 2005 Serge Sushkov Development and Tests of the Event Filter for the ATLAS Experiment IEEE-NPSS Real Time 2005 Conference, Stockholm, Sweden, 4-10 June, 2005. The ATLAS High Level Trigger, designed for a broad discovery potential at LHC Corfu 2005 Summer Institute on Experimental Particle Physics, Corfu, Greece, 4-9 September 2005 53 E. Massó Títol Axions and their relatives Univ. de Barcelona, Univ. Autonoma Barcelona, Univ. Valencia Barcelona/Valencia. Seminarios invitados, October 2005 Academic Training Axions and their relatives CERN, Geneve, December 2005 GDRSupersymmetry Evading astrophysical constraints on axions Barcelona, December 2005 GDRSupersymmetry Summary of WG3 Barcelona, December 2005 A window for New Physics in Bs->KK decays , Euridice Conference, Frascatti, Itàlia , February 2005. The angular distribution of B0 ---> K*0(--->KPI+)L+ L- at large recoil in and beyond the SM International Europhysics conference on High Energy Physics: HEP2005 Lisboa, Portugal, July 2005. Probing New Physics via the Angular distribution of B0->K*(->Kpi)l+l- , Workshop on Flavour Dynamics, Chamonix, Francia. October 8-15, 2005. Parameter estimation of qubit mixed states, Tokyo (Japan), Contributed Talk., August 28 2005 Santi Peris $B_K$ with large-$N_c$ approaches Workshop Chiral Perturbation Theory Confronts Lattice QCD Valencia, Talk, November 2005 Kaon weak interactions in powers of $1/N_c$ Lawrence Berkeley Lab., USA , talk, February 2005. Alex Pomarol The holographic composite Higgs, XVII Workshop Beyond the Standard Model Bad Honnef (Germany), March 2005. The minimal composite Higgs model , 8th European Meeting From The Planck Scale To The Electroweak Scale (Planck 05) ICTP, Trieste (Italia),, May 2005. Chiral symmetry breaking from five dimensional spaces . 12th International QCD Conference (QCD 05) Montpellier (France), July 2005. New directions in electroweak symmetry breaking . Inaugural Conference of the Galileo Galilei Institute Florencia (Italia),, September 2005. Chiral symmetry breaking from five dimensional spaces, Southampton University (UK), March 2005. Chiral symmetry breaking from five dimensional spaces, Universidad de Santiago de Compostela, April 2005. M. Quirós Supersymmetry and EW breaking in the interval IFT/UAM, Madrid. Seminario, 20 January 2005 Supersymmetry and electroweak breaking in the interval Eight European Meeting: from the Planck scale to the electroweak scale ICTP, Trieste, Italia, 23 May 2005 Ramon Muñoz Tapia Información Cuántica: fundamentos y aplicaciones Univ. Ramon Llull Barcelona. Charla invitada., March 1 2005, Qubit Pure State Estimation Pavia (Italy). Invited Talk, March 2 2005 Optimal estimation of qubit mixed states ICSSUR 06, Besançon (France) Poster., May 3 2005, Estimation of qubit mixed states with local measurements, Vienna (Austria) Poster, May 24 2005. 54 Theory: Large Extra Dimensions CDF Collaboration Meeting Sitges, Barcelona, 3 June 2005 Baryon asymmetry and electroweak phase transition Phenomenology of Elementary Particles at High Energy Peñíscola, 15 September 2005 Baryogenesis and its connection to Dark Matter Meeting on Dark Matter SISSA, Trieste, Italy, 14 October 2005 EWBG & DM LPT, Orsay, Paris, Francia. Seminario, 20 October 2005 Supersymmetry breaking and radion stabilization LPTHE, Jussieu, Universites de Paris VI et VII, Paris, Francia. Seminar 25 November 2005 o 5.4 PARTICIPATION IN EXTERNAL COMMITTEES Martine Bosman: o Radiation Task Force of ATLAS. Chair. Appointed by ATLAS Executive Board. From September 2000 to January 2005. o ATLAS Advisory Group. Member. Nominated by ATLAS Collaboration Board Chairperson. From October 2001 to February 2005. ATLAS Speakers committee. Elected by ATLAS Collaboration Board. From July 2005 to June 2008. Member July 2005 to June 2007 – Chair July 2007-June 2008. ATLAS Spanish Contact Physicist Appointed by Manager of Spanish National Plan for High Energy Physics. Since 2001. Enrique Fernández: o CERN Scientific Policy Committee. Member. Appointed by Director General of CERN. Since January 2005. o Particle and Nuclear Astrophysics and Gravitational International Committee (PANAGIC). Chair, since August 2005, nominated by IUPAP. Member since October 2000. Peer Review Committee of ApPEC (Astroparticle Physics European Coordinating Committee). Member: nominated by ApPEC Steering Committee. Since January 2001. President of "Grupo Especializado de Física de Altas Energías de la Real Sociedad Española de Física". Elected by members. From January 2001-December 2005. Interim Scientific Policy Committee of the "Laboratorio Subterraneo del Canfranc". Member appointed by Secretary General of the Spanish Ministry of Education. Since 2005. o o Matteo Cavalli-Sforza: o CERN Scientific Policy Committee. Member. Appointed by Director General of CERN. Since September 2002. o CERN Council’s Strategy Group: Preparatory Group. Member. by CERN Council, September 2005. Tile Calorimeter Institute Board Chairman: elected by the 24 collaborating Institutes. Since Feb. 01. o o o 55 Ilya Korolkov: o Luminosity Task Force of ATLAS TileCal Representative. Appointed by TileCal Project Leader. From April 2005. o Tile Calorimeter Institute Board Member. Nominated by IFAE/ATLAS Project Leader. From August 2004. Enabling Grids for E-Science In Europe (UE) Framework VI Project). Since 2003 o Elected Member of the Project Overview Board - LHC Computing Grid Project (CERN). Since 2003. Representante de España en el Comité de Implementación del LHC Computing Grid (CERN). Since 2002. o Mario Martinez: o Member of LHCC Committee at CERN since January 2005. Juan Cortina o MAGIC Executive Board: Technical Coordinator of the MAGIC collaboration, since Oct 2005. Nominated by Spokesman of the collaboration. o IAC CCI Observations Subcommittee: member nominated by MAGIC Executive Board, since Oct 2005. Andreu Pacheco o Member of the Collaboration Board of the project Enabling Grids for EScience in Europe (UE Framework VI Project). Since 2004. o Member of the LCG Grid Deployment Board (CERN). Since 2004. Member of the Atlas International Computing Board (CERN). Since 2003. Manel Martinez o MAGIC Steering Committee. Spokesperson for MAGIC Collaboration: nominated by MAGIC Steering Committee. o Finance Subcommittee of Instituto de Astrofísica de Canarias. Member: nominated by MAGIC Steering Committee. Since January 2001. o 5.5 SEMINARS ORGANIZED BY THE INSTITUTE Aran Garcia Bellido (University of Chicago, USA) Search for Mono top quarks at DZERO Date : 11 January .2005 Javier Ferrandis (Univ. of Hawaii and Berkeley, USA) Supersymmetry Breaking As The Origin of Flavor 10th January 2005 Miguel Nebot (Universitat Valencia) 14th January 2005 Christophe Grojean (Saclay) Higgsless Electroweak Symmetry Breaking 21st January 2005 Emilian Dudas (Ecole Polytechnique and ORSAY, LPTHE, France) A calculable toy model of the landscape 3rd February 2005 Manuel Delfino: o Member of the "Grupo de interés español sobre Grid y e-Ciencia (IRISGrid)." Since 2002. o Member of the International High Energy Physics Computing Coordination Committee (IHEP-CCC). Since 2004. Member Subcommittee ICFA International High Energy Physics Computing Coordination Committee. Since 2004. Coordinator for Spain and Portugal of the Executive Committee of the project: o o 56 Thomas Gregoire (CERN) Gravity mediated supersymmetry breaking in warped brane worlds 25th February 2005 Lars Bergstrom (Stockholm Sweeden) Indirect detection of dark matter 16th March 2005 University, Eduardo de Rafael (CNRS-CPT and ICREA) Asymptotics of Feynman Diagrams (Feynman's revenge) 27th May 2005 Ulla Blumenschein (University of Friburg, Alemania) Search for supersymmetry via associated production of charginos and neutralinos in final states with three leptons and the DO experiment Date : 27 May 2005 Jan Wehr (Tucson, Arizona, USA) Probability theory from gambling to disorder systems Dept. of Mathematics, Tucson 1st June 2005 E. Ma (U. of California , Riverside, USA) Derivable neutrino mass and mixing parameters 1st April 2005 Sebastien Descotes-Genon (Laboratoire de Physique Theorique, Orsay, France) Exclusive B-decays and QCD factorisation 8th April 2005 Antonio Delgado (CERN) Can the Higgs be supersymmetric composite? 15th April 2005 and Aldo Cotrone (Univ. de Barcelona) Flavors in the string/gauge theory duality 3rd June 2005 Ernest Aguiló (Univ. de Barcelona) UB collaboration at the LHCb experiment Date : 10 June 2005 Savas Dimopoulos (Stanford Univ., USA) Particle Physics circa 2010 20th June 2005 Stefan Recksiegel (TU, Munich, Germany) General lower bounds on b -> d penguins and the solution of the B -> pi K puzzle 30th June 2005 Roland Kaiser (University of Vienna, Austria) Large Nc in Chiral Resonance Lagrangians 4th July 2005 Kin-ya Oda (University of Bonn, Germany) Dynamical Higgsless Symmetry Breaking in Warped Space 12th July 2005 Hyunsoo Min (University of Seoul, Korea) Calculation of QCD Instanton Determinant with Arbitrary Mass 9th September 2005 J.D. Jackson (Lawrence Berkeley Laboratory, USA) Historical roots of gauge invariance 7th October 2005 Chang Kee Jung (University of New York at Stony Brook, USA) Einstein’s dream, neutrino revolution and uno Date : 15.04.05 Chang Kee Jung (University of New York at Stony Brook, USA) Survey of next generation nuclear decays and neutrino (NNN) detectors and proposed sites Date : 22.04.2005 Juan García-Bellido (Univ. A. de Madrid) Crítica al trabajo de Kolb et al. hep-th/0503117 2nd May 2005 F. Wilczek (MIT, Boston, USA- 2004 Nobel Prize winner) The origin of mass and the feebleness of gravity 5th May 2005 J. Eschner (ICFO, Barcelona) A single trapped ion in front of a mirror -from cavity QED effects to quantum feedback . 13th May 2005 Tony Gherghetta (University of Minnesota, USA) Emergent Gravity 20th May 2005 57 V. Miransky (Western Ontario U. Canada) Gluonic phase in neutral dense QCD 11th November 2005 E. Masso (UAB and IFAE) Axions and their relatives 18th November 2005 Martin Beneke (RWTH Aachen, Germany) From Hadronic B decays to the angles of the CKM Unitarity Triangle 25th November 2005 C. Gonzalez Garcia (SUNY, Stony Brook & Valencia Univ. IFIC) Neutrino Mixing Parameters 12th December 2005 Celine Boehm (Annecy, France) Dark Matter 16th December 2005 Antonio Barbadilla (eBioIntel) Bioinformática de la Diversidad genética Date : 20,09.2005 5.6 COURSES, WORK-SHOPS INVOLVEMENT CONFERENCES, WITH IFAE 6-11 March, 2005 33 International Meeting on Physics. Benasque, Huesca, Spain. E. Fernández (Chairman Committee). Fundamental Organizing 30 May – 3 June, 2005 CDF Collaboration Meeting Sitges (Barcelona), Spain M. Martínez (Chairman), M. Cavalli-Sforza (Organizing Committee) PIC SEMINARS 2005 Isabel Campos (Instituto de Biofísica Computacional de Zaragoza) BIFI- un instituto de investigación de Biofísica Computacional Date : 01.03.2005 Anders Ynnerman (Center for Information Technology in Norther Sweden) Virtual Autopsies : Recent advance in rendering and interaction for volumetric data in medical applications Date : 15.03.2005 Jamie Shiers (Information Technology Department, CERN) Data Challenges para el LHC Computing Grid Project Date : 12.04.2005 Carlos Figueiras (Universitat Simón Bolivar) A framework for performance evaluation of parallel application on the Grid Date : 07.06.2005 Harald Kornmayer (Forschungszentrum, Karlsruhe, Alemania) From grid application to e-science Date : 28.06.2005 10-14 September, 2005 TAUP (Topics on Astroparticle and Underground Physics) Zaragoza, Spain E. Fernández (Member of the International Advisory Committee). 21-22 December, 2005 Workshop on LHC Physics. Barcelona, Spain. M.Bosman (Chairwoman), (Organizing Committee). I.Korolkov 2-5 November, 2005 Eurogdr Supersymmetry 2005, Cosmocaixa, Barcelona, Spain J. Matias (Chair of Organizing Committee) 58 6. Experimental Division Scientific Activities 6.1 ATLAS in 2005 The IFAE team started in the ATLAS experiment fourteen years ago and will continue developing this project for at least another decade. The core of the program is to use the head-on collisions of high energy protons at Large Hadron Collider (LHC) of CERN to investigate the energy frontier of Particle Physics. The IFAE joined ATLAS, one of two international collaborations that propose to exploit the full potential for new discoveries of the LHC, already in the year 1992. The ATLAS detector is 22 meters high and 44 m long (see figure below). It uses very novel technologies such as the enormous toroidal superconducting magnets system or the central detector of pixel silicon, which uses specially designed microchips with tens of millions of electronic channels. The first data will be taken in 2007. A view of the ATLAS cavern at the end of 2005. The most prominent structure on the figure is huge toroidal magnet vacuum vessels, built by a company in Spain. The superconducting coils of the barrel toroidal magnet system are inside those vessels. In the centre of the photograph one can see the hadronic calorimeter central barrel, which was mounted just inside the toroidal magnet early in 2006. 59 To keep a general long-term perspective in the vast physics program of the LHC, the ATLAS IFAE group strongly contributes to a broad spectrum of topics that are critical to achieve optimum detector performance, namely: Construction in the IFAE of one of three "cylinders" (700 tons) of the Tilecal calorimeter The serial production of modules began in the autumn of 1999 and concluded in May, 2002, exactly in due time. The module quality, controlled during the production, is in line with the requirements of the hadronic calorimetry. All the 64 modules that have been built have been sent to CERN and pre-assembled on surface, as preparation for later assembly in the cavern of ATLAS. The first preassembly was the calorimeter cylinder constructed at the IFAE, and later the other two barrels, under the supervision of our mechanical engineer Lluís Miralles, Tilecal Project Engineer at that time. Currently all three cylinders are already installed in the experimental cavern. Design and manufacturing of the calibration electronics for the whole TileCal Calibration electronics is another major contribution of the IFAE group to TileCal. This system was designed to read either the PMT currents produced by the Cs137 sources, or the “Minimum Bias” currents produced in ATLAS by low-transverse-momentum interactions. After ATLAS installation in the experimental cavern, and throughout the life of the experiment, Cs137 sources will be inserted into the Tile calorimeter during periods without proton beams. This will allow to perform the initial inter-calibration of the entire calorimeter, and to maintain the calibration by monitoring changes in the response of any readout cell. On the other hand, monitoring Minimum Bias currents during data taking provides real-time information on calorimeter performance, and may even allow realtime relative instantaneous luminosity monitoring. The front end of the source calibration electronics consists of about 10,000 amplifier channels (of which 11,000 – including spares – were built in 1999). In 2001, production of 270 analog-todigital conversion (ADC) circuits took place; an additional 100 were added in 2004. The data acquisition interface between these circuits and the Detector Control System (DCS) is a VME/CANbus module known as Read Out Buffer (RB), designed and extensively tested at IFAE and in the test beam. The final batch of 20 RB boards was manufactured in 2004. The boards are now heavily in use in Tile calorimeter not only to communicate with the calibration system but also to perform other DCS functions. The TileCal source calibration system is now complete and already plays a crucial role in commissioning the calorimeter in the ATLAS cavern. 60 ADC and RB modules, designed and built at IFAE. Calibration of the Tile Calorimeter with the beam particles. The test beam data taken with electrons, muons and pions, every year at CERN since 1993, provide the best opportunity to study the calorimeter properties, to predict its behaviour in the LHC context, and test signal processing methods. Complementary to the high energy particles, the data taken with Cs137 radioactive source are also used for the equalization of the gains in the calorimeter cells. These data turned out to be a very precise tool to measure the optical properties of the calorimeter. The IFAE group has been very active in these tasks during the phase of TileCal R&D and continued during the series of module tests that ended in 2004. The group has a long history record in this field. O. Saltó and I. Korolkov showed that the inter-calibration error between TileCal readout cells, after equalization by the Cs137 source, does not exceed 2.5%. Furthermore it was shown that Cs data can be used to predict the response of a module to particles with a precision of 2.7%, as can be seen from the figure: Predicted vs measured muon signals all tested Tile calorimeter modules (left); distribution of the ratio between predicted and measured muon signals. The RMS of the distribution is 2.7%. (right). Since 1993 until this year, eight Diploma Theses were defended based on the calorimeter calibration with the particle beams. The Tilecal collaboration members published several articles in various refereed journals. Commissioning of the Tile Calorimeter Read-Out in the Cavern. The hadronic calorimeter of ATLAS, which is the very first ATLAS subdetector deployed into the experimental 61 cavern, has to be commissioned sharply in time, by the first LHC collisions. Extensive quality control checks of the calorimeter read-out electronics and dedicated tests started in the second half of 2005. Being one of the expert groups of the Tile collaboration, the IFAE group provides major contribution to the final commissioning of the Tile calorimeter read-out electronics. The IFAE group also strongly contributes to the program of inter-calibrating responses of the individual Tile cells by adjusting the PMT gains with the use of movable radioactive Cs source, which is another area of our expertise. The very first cosmic ray recorded by the Tile Calorimeter in the experimental cavern of ATLAS in 2005. 62 Contribution to the ATLAS Trigger system Once the Tile calorimeter construction was well under way, the group reconsidered the best strategy to get well prepared for LHC Physics. It was natural to expand the contribution to software and physics analysis. The group decided to participate in the Third Level Software Trigger, the Event Filter, which uses many components of the offline event reconstruction and physics analysis. The Event Filter provides the final selection of physics events and streams them to the mass storage system, whose capacity requires the EF to reduce the event rate down to ~ 200 Hz for events of size 1.5 MB. The Event Filter is software implemented in a computer farm of about 1000 processing nodes. Its architecture presents several interesting features, like access to fully assembled event data, plug-in type integration with offline event analysis algorithms, modularity and easy configurable choice of algorithms. Besides the main event triggering and data transportation functions, the Event Filter can also implement additional functionalities: monitoring of the selection process and of the detectors; data streaming for fast reconstruction of high-priority physics channels and on-line calibration. Hence it is an ideal place to get first-hand access and good understanding of the data. IFAE is one of the main contributors to the development of the Event Filter infrastructure. Since 2004, the group also actively contributes to the development of the Event Selection Software and related Physics studies in the framework of the ATLAS PESA (Physics Event Selection and Analysis) group. The experience accumulated in that work will be directly useful for the physics analysis of the first ATLAS data and the searches for new physics. (a) Event Filter (1999 onwards) In the third level of the ATLAS trigger system, the flow of events and their processing are handled by two major software components, the “Event Filter Dataflow” (EFD) and the “Processing Tasks” (PT) respectively, which run in every processing node of the farm. The IFAE is in charge of all software components related to the “Processing Task”. The main role of the PT is to serve as interface and to execute the PESA software. However it can also be configured to run monitoring and/or detector calibration algorithms. Since 1999, various iterations in the design and implementation of the software took place. All the Event Filter components required for the main function of triggering were finalized and internally reviewed in ATLAS in spring 2005. The basic design schemas for the additional functions of detectors calibration and online events monitoring is currently under development. The EF system was deployed for the first time and intensively used at the ATLAS Combined Test Beam (CTB) at CERN in May-November 2004 (see Tesina of student E.Segura). In 2005, the Event Filter has been tested for scalability in two large scale test beds: 800 nodes of the WestGrid cluster in Canada and 600 nodes of the LxShare cluster at CERN. The core design functionality has been enlarged. Event data can now be accessed by the PT application outside of the context of the Event Filter farm, directly from the standalone data acquisition system used for detector monitoring during the commissioning in 63 the ATLAS Experimental Area. The status of the Event Filter project was presented by PostDoc S.Sushkov at the Real Time and Networking conference that took place in Stockholm in spring 2005. In summer 2005 the “pre-Series”, the first complete vertical slice of the full TDAQ hardware chain, has been deployed in the ATLAS Counting Room. The Event Filter software was installed and used in the first TileCal Cosmic Run in the cavern (see figure below). The Graphic User Interface shows the EF Filter software running during the first Tile Cosmic run in August 2005 together with monitoring histograms. Project support engineer H.Garitaonandia contributed to the development of the strategy for the installation of the complex ATLAS TDAQ software distributed over various software repositories. He developed an automatic procedure based on a scripting tool using state-of-the-art peer-to-peer, wormand broadcast-type data transmission techniques. That tool is also used for gateway security, farm information and service to Windows users in the pre-Series cluster. (b) Physics and Event selection Software and Analysis (2004 onwards) Since 2004, the ATLAS group joined the Physics and Event Selection software and Analysis group (PESA) responsible of the development of the selection software and all the related physics performance studies. Our group is actively involved in the development of the hadronic triggers composed of the jet, τ and missing transverse energy 64 Level1-Level2-EF slices. It is an excellent opportunity to prepare the tools for physics analyses with jets, τ and missing ET in the final state, which are of great interest for our group physics goals. The main focus is the τ Level2 trigger and the Jet EF trigger. M.P.Casado presented the status at the ICATPP 2005 conference in Como. M.Bosman and two ATLAS colleagues, of McGill University and BNL respectively, coordinate since 2005 the development and commissioning of the τ, jet and missing ET triggers. Preparation for LHC physics The IFAE group has defined an initial physics research program at the LHC, designed to compete for an early discovery of new physics, considering a realistic evolution of machine luminosity and detector understanding. This choice is based on the knowledge accumulated during the ATLAS Physics and detector performance studies carried out by the IFAE ATLAS group as well as on the experience and physics analyses performed by the IFAE CDF group at the Tevatron. The program also contemplates other interesting studies that may require more integrated luminosity to culminate in a discovery. The program was the outcome of an internal workshop held at the end of 2005 where the group benefited from the active participation of M. Mangano from the CERN Theory Division. The selected channels include measurement of dilepton invariant mass and multiple jets and missing transverse energy final states observables. In addition the measurement of Boson+jet(s) production will constraint important standard model backgrounds and provide in-situ jet calibration. A recent highlight is the study of jet energy scale calibration using the photon+ jet events, the subject of the Tesina of C.Deluca. The dominant hard scattering process is quark + gluon  photon+ quark. To a very good approximation, the transverse momentum of the jet and the photon balance each other. Therefore one can use the photon pT as an independent reference for the comparative study of different jet reconstruction algorithms and to investigate important aspects such as energy calibration, multiplicities, gluon radiation in the initial and final states (ISR and FSR) among others (see figure below). Photon identification was studied on the basis of the characteristics of the electromagnetic shower as it develops in the electromagnetic calorimeter. The background from jet+jet events was quantified. The results were presented at the ATLAS Physics Workshop in Rome in 2005. The study focuses now on preparing the strategy to analyze these events as an in situ jet calibration tool with the first LHC data. Comparative study of the pT balance between the photon and the quark produced in the hard scattering (black) and between the proton and the jets reconstructed with various jet algorithms: (red) “kT”, (green) “cone 0.7”, (blue) “cone 0.4”. The group has carried out in the past years various studies related to Higgs 65 Bosons searches, one of the primary goals of ATLAS: the study of the discovery potential of a heavy Standard Model Higgs in the decay mode H ZZ; the discovery potential and mass measurement of a “light” charged Higgs (tHb; Hν). Recently the group studies the possibility of discovering the supersymmetric Higgs Boson A in its decay mode Aττ. One may consider the decay chains Aττelectron hadron, or Aττhadron hadron. In the first case, one selects events trough the isolated electron trigger. In the second case, one uses the trigger based on identification of the τ hadronic decay together with missing transverse energy. Special emphasis is put on studying all aspects of the trigger. The following figure shows the τ  electron selection efficiency as a function of the transverse momentum of the τ and the electron. Preparation of the computing infrastructure for the LHC, using the new GRID technology The processing and data storage requirements for LHC experiments have led the collaborations and the participating institutions to devote resources to the development of dedicated computing programs, based on the new, emerging technologies. The GRID is one of the technologies on which IFAE is basing its efforts to exploit LHC data. This technology is based on distributing computing and storage resources into several strongly connected centers, to the point that a user may be unaware of where his analysis codes are executed, or where the data he accesses are stored. Electron trigger efficiency as a function of the electron pT (red squares) and of the pT of the τ (black circles) for A ττ  electron hadron. 66 The IFAE-ATLAS group worked with GRID technology since the beginning, either directly in ATLAS or through European projects with IFAE participation: DATAGRID, CROSSGRID and EGEE. The GRID infrastructure of IFAE was started with ATLAS resources; this effort was followed with funding from an “Acción Especial” (FPA-2001-3969-E) followed by a three-year coordinated project of the principal Spanish HEP groups (FPA2002-04208-C07-04), coordinated by M. Delfino, currently the director of “Port d’Informació Científica” (PIC). Located on the UAB campus, very near IFAE, PIC has the goal of supporting science projects that require distributed access to enormous volumes of data, such as LHC experiments. The IFAE group has been actively participating in several PIC activities. One of those is LCG (for LHC GRID), realized by a collaboration of six Spanish groups coordinated by PIC. One of the LCG goals is the deployment of the GRID infrastructure of the LHC in Spain; this was successfully done in late 2003 and again in 2004. Another activity was taking part in a simulation of LHC data analysis, specifically with ATLAS data. All Spanish groups take part in these simulations, known as Data Challenges (see figure below). In general, the collaboration between PIC and IFAE is very productive for other aspects too, such as for instance tutoring students on the use of the GRID for their analyses. Another coordinated Project addresses preparations for ATLAS physics. The participants are the IFIC of Valencia, the UAM of Madrid and IFAE. The project is named “Development of the distributed TIER-2 infrastructure for the ATLAS experiment at the LHC (FPA2005-07688-C03-02). The TIER-2 will be devoted to the analysis of experimental data and to the generation of MonteCarlo events for ATLAS. Contribution from the various sites to the GRID data production done for the ATLAS Rome Workshop. 67 The participation in all these technical tasks has a high formative value, particularly in complex data processing tasks, many of them in real time. The above mentioned experience is of great interest for the industry, since these topics cannot be easily taught in faculties or high schools. Participation in all the levels of the management of ATLAS Since the first years of our participation in ATLAS senior members of the group have been contributing to the management of the collaboration, to the decisions on technical relevant topics for the whole experiment, and to evaluation committees or dedicated task forces: ►M. Bosman: member of the Advisory group (2001-2003) and of several task forces, among which the chair of the ATLAS Radiation Task Force that undertook a five years study of the radiation expected to be present at the interaction hall and thus at the ATLAS detector; coordination from 1994 to 2003 of the physics and detector performance study group “Jet-ETmiss”; ATLAS Speakers committee, member July 2005 to June 2007 – chair July 2007-June 2008; coordination of the Jet/Tau/Etmiss Trigger group; member of the ATLAS TDAQ Institute Board. ►M.Cavalli-Sforza: president of TileCal Institute Board (2001-2003), president of Forward Review panel (physics measurements in the region of small angles (2001): possible extensions of ATLAS); national Spanish contact for topics of resources from 2000. ►I.Korolkov: member of the Tile Calorimeter Institute Board, TileCal representative to the ATLAS Luminosity Task Force. ►Ll. Miralles: project engineer of TileCal (2001-2004), person in charge for the pre-assembly of three barrels of ATLAS. ►A. Pacheco, national Spanish contact for topics of computation. ►Georges Blanchot: presently at CERN in the capacity of Chief Engineer for the Electrical Cabling of ATLAS. ► The IFAE has also taken the responsibility of following up a contract between CERN and an industry in Spain that built the 8 very large vacuum vessels surrounding the superconducting coils of the ATLAS Barrel Toroidal Magnets. These vessels have been delivered to CERN and are at present being installed in the interaction point. 68 6.2 CDF in 2005 In 2003, a group from IFAE joined CDF (Collider Detector at Fermilab) with full membership status. CDF is one of the two main collider experiments at the Tevatron at Fermilab, and it is being carried out by an international collaboration of 800 physicists from 62 institutions in 12 countries. At the Tevatron, proton-(anti) proton collisions are produced with a center-ofmass energy of 1.96 TeV. After the discovery of the top quark in 1995, the Tevatron has been upgraded : the centerof-mass energy has been increased (from 1.8 to 1.96 TeV) and its instantaneous luminosity has already achieved the Run II design value of 1033/cm2s. The Tevatron has already delivered a total integrated luminosity above 1.5fb-1. CDF has also gone through major upgrades. A new DAQ and trigger systems have been installed (where the latter includes an original setup which allows the detection online of secondary vertices), together with a new tracking chamber, new silicon tracker, a time-of-flight detector, new forward calorimeters and increased angular coverage for muon detection. All of this places CDF in a privileged position for studying fundamental particle interactions at the present energy frontier, a position that will be maintained until the startup of the Large Hadron Collider at CERN, foreseen for 2007. The work in CDF is quite complementary to the activities carried out within ATLAS by essentially the same IFAE group. Given the magnitude and complexity of an experiment as ATLAS, and the intrinsic difficulty of the analysis of hadronic collisions, at the time of LHC and ATLAS startup, the experience gained in CDF will be invaluable – both for data-taking and data analysis and for the operation of the detector. This was in fact one of the reasons for joining CDF. CDF itself has a very rich physics program as shown by the number of articles that were published using Run I data. The CDF physics analyses in Run II will cover a wider spectrum of topics in particle physics. (left) Picture of CDF during the installation of the Silicon Detector into the tracking chamber. (right) Total delivered luminosity by the Tevatron (March 2005). 69 The experiment has already collected about 1300pb-1 (ten times more luminosity than that integrated in Run I) and it is expected to collect at least 4 fb-1 before the LHC starts colliding protons on 2007. The following items summarize some of the most relevant aspects of the CDF physics program:  CDF for physics analyses. The approval of the proposal to build the DQM system by the collaboration back on May 2003 (in an experiment as CDF, which was already taking data after spending several years in the upgrade of the detector) showed the importance of the project. The quality control is performed at two levels . Online, an automatic system alerts the CDF shift crew if faults are observed in the data. The online system is based on JAVA monitors that control the basic performance of the detector. The online diagnosis is available via Web and finally kept in ORACLE databases. Offline, after the data has been processed, a DQM system automatically checks the quality of the data using very high level physics objects (electrons, photons, muons, J/Psi, jets, etc) which, in addition to confirming the online diagnosis, detects possible errors introduced in the offline reconstruction codes or calibration constants. The final DQM decisions are employed to establish standard « good run » lists for the whole collaboration. The DQM project requires a good knowledge of CDF, both the hardware of the different detectors and the offline reconstruction software. Moreover, the DQM activities involve a rather high level of leadership and coordination within CDF, which put IFAE members in a very visible position inside the collaboration. As it is shown in the figure below, the DQM is considered in the CDF organization chart as one main « detector subsystem » and two IFAE members act as coordinators of the offline data validation activities.     Study of the physics of the top quark. This includes de measurement of the production cross section, mass and couplings, among others. Study of the physics of the bottom quark and its hadronic states, including the search for Bs oscillations and mixing. Precise measurements on the electro-weak sector like, for example, the mass and width of the W boson and measurements of the triple-bosonic coupling (WWg), among others. Search for new particles and fundamental interactions (the Higgs boson, supersymmetry, extra-dimensions, quarksubstructure, etc.). Studies on jet production and QCD processes at high and low transverse momentum, in addition to studies on the production of electro-weak bosons in association with jets in the final state, as main background for the Higgs signal and searches for new physics. DQM: data quality monitoring of the CDF data The IFAE group in CDF continues having major responsibilities on quality monitoring (DQM) of the data used by 70 CDF Organization Chart (2004). The IFAE logo indicates those positions where IFAE maintains responsibilities before the Collaboration.   Physics program of the IFAE group in CDF In addition to the work related to DQM, IFAE members at CDF continue the different activities defined in the IFAE physics program. The strength of the group on the physics analysis front can be inferred from the number of talks given in conferences during 2005:     4 talks at CDF Collaboration Meetings (Fermilab and Barcelona) 1 talk at APS Conference (Denver, Colorado, USA)   1 talk at EuroGRD Supersymmetry 2005, Barcelona. 1 talk at PANIC´05, XVII Particles and Nuclei International Conference (New Mexico, USA) 2 plenary talks at CORFU Summer Institute for EPP (Corfu, Greece) 1 talk at HEP, International EuroPhysics Conference on High Energy Physics (Lisbone) 1 talk at WIN´05, Weak Interactions and Neutrinos (Delphi). 1 Seminar at ANL, USA. 71     1 plenary talk at DIS05 (Madison, USA) 1 talk at DIS05 (Madison, USA) 1 plenary talk at XIX Rencontres de Physique de la Vallee d'Aoste (La Thuile) 1 talk at 20th Annual Lake Louise Winter Institute (Alberta) and by the fact that Dr. Lefevre was appointed by the Collaboration as QCD convener in 2005-2006. In 2003 and 2004, the IFAE group defined a research program based on the study of events with jets of hadrons in the final state, and multi-jet events with large missing transverse energy as a signature for new phenomena and supersymmetry. This physics program at CDF perfectly overlaps with current activities of IFAE at ATLAS, which ensures a permanent coordination and the coherence of the efforts in both experiments, together with the best possible training for the future physics program at the LHC. Finally, the IFAE group at Fermilab heavily used the existing infrastructure of computing and data storage at the PIC in order to consolidate a computer cluster dedicated to the physics analysis of the CDF data. Measurement of the inclusive jet cross section at CDF using the Kt algorithm In Run II, the measurement of the inclusive jet cross section is a fundamental piece of the Tevatron physics program. Thanks to the increase in the center-of-mass energy, the jet cross section has increased by a factor about 3 for jets with transverse energies above 500 GeV and the new measurements will extend the kinematics region of the transverse energy of the jets up to values of about 700 GeV (corresponding to distances of the order of 10-19 m). The increase in the Tevatron luminosity will make possible to perform a precise jet measurement sensitive to the presence of new physics. The data will have the necessary statistical power to further constrain the gluon distribution within the proton at high-x and provide a new measurement of the strong coupling constant s(MZ). The use of different algorithms to search for jets is also an important aspect of the QCD physics program in Run II. In Run I, CDF used an interactive conebased algorithm in the () space to search for jets from the energy deposits in the calorimeter. During the past few years, theoretical developments have shown that such algorithm is not suitable for fixed-order perturbative calculations since it is neither infrared-safe nor collinear-safe to all orders in perturbation theory. Moreover, additional « merging/splitting » parameters must be included that compromise the predictivity of the perturbative calculations at the parton level. Different improved algorithms have been discussed for Run II, however, only the Kt algorithm, which has been already used by the experiments at HERA and LEP, has all the desired theoretical properties. The Kt algorithm allows to carry out a clean comparison with pQCD NLO predictions. Nevertheless, the performance of the Kt algorithm in hadronic collisions will depend on a good understanding of the contributions coming from soft-gluon radiation and multiparton interactions in the final state. In addition, Run II will explore the combination of calorimeter towers 72 and tracks as input for the jet algorithm. There studies at the Tevatron will establish the future strategy for the jet physics at the LHC. This constitutes a fundamental aspect for the preparation of the IFAE group in view of the future physics program in ATLAS. Measured inclusive jet cross section for central jets using the Kt algorithm. The IFAE members have carried out the analyses using Kt jets at CDF. Final results, for central and forward jets, and using up to 1fb-1 of Run II data, were presented during 2005 conferences (see summary Figure above). The central measurements have been recently published on Physics Review Letters. The results indicate a good agreement with pQCD NLO calculations and confirm the validity of the Kt algorithm to search for jets of hadrons in hadronhadron environments At the moment, the IFAE team proceed on the publication of the forward measurements in Phys. Rev. D In the coming years the IFAE team will focus in constraining the gluon PDF, as well as in the calculation of limits to the presence of quark compositeness, based on the measured cross sections. Search for Squarks, Gluinos and Extra-dimensions at CDF The search for new physics beyond the standard model and, in particular, 73 supersymmetry, is one of the main goals of both the Tevatron and the LHC physics programs. At the Tevatron, the best sensitivity to the production of supersymmetric particles comes from the study of hadronic final states with multiple jets and large missing transverse energy. These topologies could correspond to the production of squarks and gluinos which decay producing cascades of gluons and quarks, which are detected as multiple jets in the final state. For those models where R-parity is conserved , the LSPs (Lightest Supersymmetric Particles) are considered stable and leave CDF undetected, producing a signal of large missing transverse energy. The Run I results have established the best limits to squark and gluino masses within MSSM and mSUGRA models. The increase in the center-of-mass energy and luminosity in Run II will allow searching for supersymmetry in a new kinematical region with higher sensitivity at high masses. In case that no new physics is observed, the exclusion region in the squark-gluino mass plane will be significantly extended towards higher masses. This analysis requires in-depth knowledge of the jets and missing transverse energy distributions, since the selection cuts must reduce the background by orders of magnitude. The background is dominated by QCD processes, W/Z production in association with jets, top production and beam-pipe interactions. In particular, Z+jets production processes where the boson decays in two neutrinos have a topology in the final state which is almost identical to that of supersymmetry. In order to avoid a posteriori biases in the measured distributions, the analysis will be carried out using « blind techniques », where a signal region is defined and removed from the study until all the elements of the analysis (selection criteria, background composition, systematic errors, etc..) are completely fixed. First results have been obtained based on 245 pb-1 of Run II data (see Figure below). The analysis was optimized for a region in the gluino/squark mass place at the edge of the current exclusion limits. After selection cuts 3 events where observed with a standard model prediction of 4 events. Therefore, no evidence of new physics is observed yet. The analysis is being now extended to cover a width spectrum of gluino and squark masses. Preliminary Run II results on the search for gluino/squark production based on 245 pb-1. 74 In addition to the search for squarks and gluinos, searches for other exotic particles will be performed like, for example, searches for Kaluza-Klein resonances in models with extradimensions with similar hadronic final states.Members of IFAE are leading those analyses within the Exotic Physics group in CDF. First preliminary results are expected to be finalized in time to be presented at the 2006 spring conferences. Study of the jet internal structure and energy flows at CDF The IFAE group has continued the line of investigation initiated in CDF by M. Martínez on the study of the internal structure of jets and the energy flows of in hadronic collisions. The study of the jet internal structure allows to test the existing Monte Carlo models for jet fragmentation and soft-gluon radiation in hadron-hadron collisions. First measurements have been performed in events with at least one jet in the final state (see following figure) using the first Run II data samples. The results from this study were published by Physical Review D in 2005. The measurements have been compared to different Monte Carlo models (PYTHIA and HERWIG) for central jets in a wide range of jet transverse momentum. The results show that those models give a reasonable description of the data. Measured jet shape as a function of the jet transverse momentum. The data are compared to different models for jet fragmentation and soft-gluon emissions. In addition, the study of energy flows, outside the cone of the jets, shows that 75 they are particularly sensitive to the emission of soft gluons between the partons that do not participate in the hard interaction (also denoted as the underlying event). A detailed knowledge of the underlying event is crucial for a correct estimation of the standard model backgrounds in searches for new physics, both at the Tevatron and at the LHC where, for instance, events with a limited jet multiplicity are often selected in order to reduce the background from QCD. Consolidation of the cluster at Barcelona for the analysis of the CDF data The IFAE physics program for Run II requires to handle and analyze large data volumes, in addition to the production of large Monte Carlo samples of simulated events necessary for the different studies. As an example, the measurement of the inclusive jet production mentioned above, assuming an integrated luminosity of about 500 pb-1, has required the analysis of more than 13 TB of data, 6 TB of official Monte Carlo samples and the storage of more than 4 TB of ROOT analysis Ntuples. As shown, an adequate CPU and storage capacity is fundamental in order to maintain the leadership in the different physics topics where IFAE is involved, and it must scale with the expected increase of the Tevatron luminosity in 2006-2008. The IFAE group already decided in 2003 to use the PIC (Scientific Information Port) in Barcelona to install a computer cluster dedicated to the analysis of the CDF data. The infrastructure available at PIC, both of personnel and technical support, as well as the CPU power and tape storage resources (a robotized system of 6000 tapes with an overall capacity of 1.2 PetaByte) allow to establish (with relatively low costs) a robust computer cluster devoted to the analysis of Tevatron data. In 2004, following the example from other CDF institutions, IFAE initiated the installation of a De-centralized CAF (DCAF) at PIC and hired a software technician in order to maintain it. In 2005 the size of the computer cluster has been steadily increased and it has already played a significant role in the generation of the necessary Monte Carlo samples for the physics analyses carried out at Barcelona. During the following years, the increase in the Tevatron instantaneous luminosity (where at least a factor 2 is expected in 2006, when the electron-cooling will be operational in the proton-recycler) will produce a drastic increase of the physics data volume. The adequate increase of the CPU power and storage of the cluster in Barcelona will be one of the keys of the future success of the IFAE physics program at CDF. 6.3 The DES (Dark Energy Survey) Project In 2005 a group at the IFAE, along with groups of the IEEC (Institut d'Estudis Espacials de Catalunya) and of CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Madrid), joined the DES (Dark Energy Survey) collaboration. DES is formed by several institutes, of the United States and the United Kingdom, that work in the field of Observational Cosmology. The aim of the project is to catalogue and to measure the spectrum in four bands of an enormous number of galaxies (about 300 million) and clusters of galaxies in 5000 square degrees region of the Southern Hemisphere. 76 These measurements have as objective the study of several aspects of cosmological relevance, in particular to try to measure the equation of state of the universe. A smaller region of the sky (of 40 square degrees) will also be observed repetitively, with the objective of discovering and measuring the photometric spectrum of about 1900 type Ia Supernovae, in a rank of redshift z, of 0.370 MeV/nucleon that hit the satellite. These charge particles, when deposited in the test masses, will charge the masses and consequently disturb the measurements. The Radiation monitor uses 2 PIN photodiodes, the same PIN photodiode used for the GLAST detector, separated by 20mm to form a telescope with an acceptance of 15% of 4 solid angle, for the coincidence events of which the RM measures the energy deposited by the charge particle. The energy resolution of the RM is sufficient enough to differentiate between spectra of the energy deposited by Solar Energetic Particle (SEP) and Galactic Cosmic Ray (GCR). The difficulty in carrying out the design/production of the RM is the limit on its total weight (<950 grams), its total power consumption (<2W), and the limited sample of electronics components that are space qualified. The IFAE has taken the leadership in the design/production/tests of the RM. The RM was tested first in IFAE to insure that all the electronics is functioning well. We used cosmic muons to trigger on coincidences in both PIN diodes, to check the corresponding measurement of the energy deposited. After that we moved the RM to the Proton Irradiation Facility (PIF) at the Paul Scherrer Institute (PSI) in Switzerland for full test with protons at different energies and with different beam intensities to study the energy dynamic range as well as the pileup response. The results of both tests, at the lab and at PSI, showed that the performance of the RM has fulfilled all the requirements in order to proceed with the design and production of Radiation Monitor engineer model and later the flight model. Below one can see the photo of the RM mounted on a rotary table in the PIF area. 92 93 94 7. Theory Division Scientific Activities There are three lines of research in the Theory Division of IFAE: Quantum Information Theory, Elementary Particles in Astrophysical and Cosmological Settings and Theory of the Fundamental Interactions. revolution in the processing of information; and “everything is information” (Wheeler, 1998). In particular, this revolution is already taking place in simulation and computation, as Richard Feynman predicted in the sixties, and in cryptography. Recent advances in experimental techniques, which have enabled us to study elementary systems such as single atoms trapped in cavities, individual photons, etc, are offering an extraordinary scenario for testing many predictions of quantum mechanics that had remained unchecked since the thirties. Most of the related theoretical work has been receiving renewed interest. The Quantum Information Group (GIQ) brings together researchers attached to the Autonomous University of Barcelona (UAB) whose work is mainly in the field of quantum information and entanglement. GIQ is not an official entity but it includes the whole membership of the QUIRT (Quantum Information and Related Topics) project, which has been approved by the Spanish Ministry of Science and Technology (MCyT) and is financed until September 2005. The core of GIQ has the official title of “Consolidated Team”, granted by the Generalitat de Catalunya, the Catalan local government, from whom it also receives financial support. Our group is also member of the European network QUPRODIS (IST-2001-38877). 7.1 QUANTUM INFORMATION THEORY “Quantum Information” is a multidisciplinary and growing scientific arena where quantum physics meets fields as diverse as mathematical statistics, cryptography, computer science, and nano-technology, among others. “Information is physical” (Landauer, 1962), and therefore it can be stored and processed by quantum systems, which follow the rules of Quantum Mechanics. There is a plethora of new possibilities beyond the classical world and many puzzling and counterintuitive effects. Quantum Information Theory is the theoretical body that extends classical information theory into this new framework. The continuous miniaturization of computer microchips will inevitably take transistors and other electronic devises to a limit where the laws of classical mechanics will no longer work: the “quantum frontier”. A good understanding of this regime is thus of outmost importance. Furthermore the new theoretical and experimental possibilities offered by quantum mechanics can lead to an unprecedented 95 Most of the GIQ members belong to the IFAE Theory Group. Their research interests gradually moved from High Energy Physics to foundation of quantum mechanics and to quantum information over the last years. By mid 1999 the group reoriented its research completely to focus on quantum information. 2003 was the year of consolidation of GEIC (Grupo Español de Información Cuántica), a specialized division of the Real Sociedad Española de Física (RSEF). Our group has contributed decisively to its foundation, being one of us (M. Baig) its vicepresident. Our group has established international collaborations and, in particular, a joint project with the Quantum Information group of Hanover university. We keep regular scientific contacts with many leading international research groups. Our work concerns mainly the characterization of quantum states, the optimal states to store different types of information and the design of best strategies to recover it. experiments can illuminate the physics of some of the aspects of star and universe evolution. Our work is phenomenology-oriented and thus it is intimately linked to experiments, both laboratory type (high energy accelerators as LEP and LHC at CERN, low energy detectors, etc.) and observational (ground-based and satellite borne telescopes, etc). It is worldwide recognized that our field, sometimes called either Astroparticles or Particle Cosmology, is in progressive expansion. One major discovery has been neutrino oscillations, detected from the analysis of atmospheric and solar neutrinos. This is very important for neutrino physics, to which we have been involved since many years and indeed it is an objective of our group. Other recent discoveries with impact in our field refer to the anisotropies of the microwave background, and the determinations of distances to supernovas. The emerging scenario from the analysis of all these observations is very interesting, and one is faced to deep questions. With our research we would like to contribute to these developments. 7.2. ELEMENTARY PARTICLES IN ASTROPHYSICAL AND COSMOLOGICAL SETTINGS The general goal of our project is the study of some of the theoretical issues in the physics of elementary particles and their interactions, particularly when we have an astrophysical or cosmological medium. In these media one has some processes that are suppressed in laboratory conditions, or at least they occur differently. Thus, the results that we obtain in our research complement and enrich the information obtained in laboratory experiments. In fact, the flux is in both ways; data from laboratory 7.3. PHYSICS OF THE FUNDAMENTAL INTERACTIONS Starting in 2007, the new experiment at the Large Hadron Collider at CERN will probably unravel the most important properties of the mechanism behind the breakdown of the electroweak symmetry and, consequently, of the origin of mass. Besides its fundamental importance at a conceptual level, this has far-reaching implications. For instance, the 96 asymmetry between matter and antimatter in the universe depends crucially on the mechanism of generation of mass through the amount of CP violation which may be present in Nature. In this project we plan to approach these fundamental problems by studying different theoretical mechanisms of generation of mass. We plan to analyze in detail, in the context of a framework of unification among all the fundamental interactions, the ideas of supersymmetry and extra dimensions as two of the most promising ones. At the same time, we also plan to study the dynamics of hadrons and the phenomenon of CP violation. Hadrons owe their masses to a dynamical mechanism which we would like to understand in terms of the underlying field theory called Quantum Chromodynamics (QCD) as this, besides the interest in its own right, may shed some light on the problem of generation of mass alluded to above. Furthermore, a better understanding of QCD is indispensable to unravel the amount of CP violation in Nature for this has only been measured in a hadronic system whose dynamics is basically dominated by QCD. Because these problems have an obvious experimental relevance, our investigations will follow closely existing (Daphne, BaBar, Tevatron,…) as well as future (LHC, etc…) highenergy experiments carried out at laboratories around the world. 97