Perdekamp PHENIX Belle

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					           PHENIX pp, dA and Hadron
           Fragmentation in Belle
                                      Matthias Grosse Perdekamp, Illinois

            (I) Overview
                  Polarized pp at RHIC: Status
                  Physics & Analysis
                  Instrumentation Work

            (II)     W Trigger Upgrade (complete !)
                                         (Francesca Giordano)
            (IV)     Fragmentation Functions for
                     Proton Structure Studies from Belle
                                         (Martin Leitgab)



PHENIX pp, dA and Hadron Fragmentation in Belle, January 17 th , 2011
                                                                 RPC-3 north test assembly
Accelerator + Experiments Ready for                              at the Nuclear Physics Lab
                                                                 at UIUC
W-Physics Program at √s=500 GeV
  (I)     UIUC/KEK led forward muon trigger upgrade
          for W-Physics completed in December 2011.
          Funded through NSF-MRI/JSPS.
  (II) RHIC proton beam polarization 50% and luminosity at 9x1031cm-2s-1
       factors 0.8 and 0.6 below the projected performance parameters.
  (III) First parity violating spin asymmetries from W-production observed
        in PHENIX and STAR at mid-rapidity from first run at √s=500 GeV 2009
                        STAR AL in W→eν                                        ATLAS pp
                        Phys.Rev.Lett. 106
                        (2011) 062002                          Tevatron pp




                                                                   NNLO pQCD
                         PHENIX & ATLAS σ
                         for W→eν in pp              PHENIX pp
                         Phys.Rev.Lett. 106
                         (2011) 062001
        January 17th             PHENIX pp, dA and Belle FFs                    2
                                                                 RPC-3 north test assembly
Accelerator + Experiments Ready for                              at the Nuclear Physics Lab
                                                                 at UIUC
W-Physics Program at √s=500 GeV
  (I)     UIUC/KEK led forward muon trigger upgrade
          for W-Physics completed in December 2011.
          Funded through NSF-MRI/JSPS.
  (II) RHIC proton beam polarization 50% and luminosity at 9x1031cm-2s-1
       factors 0.8 and 0.6 below the projected performance parameters.
  (III) First parity violating spin asymmetries from W-production observed
        in PHENIX and STAR at mid-rapidity from first run at √s=500 GeV 2009
                        STAR AL in W→eν                                        ATLAS pp
                        Phys.Rev.Lett. 106    Why AL in W →μν?
                        (2011) 062002                          Tevatron pp
                                              Forward muon detectors have
                                              8 times larger acceptance. The
                                              forward kinematics x1>x2 is
                                              best suited for flavor separation !
                                                                 NNLO pQCD
                         PHENIX & ATLAS σ
                         for W→eν in pp              PHENIX pp
                         Phys.Rev.Lett. 106
                         (2011) 062001
        January 17th             PHENIX pp, dA and Belle FFs                    3
 Polarized pp at RHIC Status & Plans
(I)    RHIC Performance with Polarized Protons at √s=500 GeV
Run                    2009       2011            2012        Design
Polarization            39%        48%            55%          60%
Luminosity [cm-2s-1]   5.5x1031   9.0x1031       1.2x1032     1.6x1032
∫Ldt [pb-1]             8.6        17              40          120
W-trigger upgrade prototypes ~75%                 100% installed!

(II) RHIC Spin Plans for 2012-2014+:
 o W-physics at 500 GeV p-p:                goal ∫Ldt = 300 pb-1
 o Transverse spin √s= 200 GeV p-p:         goal ∫Ldt = 30 pb-1
(III) RHIC Run 2012 Plan: (start in Februar)
                 4 weeks 200 GeV pp, transverse spin
               5-7 weeks 500 GeV pp, longitudinal spin
               4-6 weeks 200 GeV Cu+Au and/or U+U

      January 17th           PHENIX pp, dA and Belle FFs                 4
 Summary of Results from
            PHENIX & Belle 2008-2011
PHENIX Analysis
First measurement of di-hadron correlations at forward rapidity in p-p and d-Au
collision, probing for the presence of the Color Glass Condensate
                Thesis 2011: Beau Meredith
                Beau Meredith, Phys.Rev.Lett. 107 (2011) 172301
                based on NSF funded, UIUC built forward PbWO4 Calorimeter (MPC)
Single transvers spin asymmetries, AN at forward rapidity and high pT:
              Thesis 2010: John Koster
               John Koster, PRD draft being reviewed in PHENIX
               based on NSF funded, UIUC built forward PbWO4 Calorimeter (MPC)
First measurement of asymmetries in di-hadron fragmentation in polarized p-p
             Thesis 2010: Ruizhe Yang
             Will be published with statistics from runs 12+13
Belle Analysis:
First measurement of the di-hadron Interference Fragmentation Function in e+e-
               A. Vossen Phys. Rev. Lett. 107 (2011) 072004

PHENIX Instrumentation
Completed NSF funded PHENIX muon trigger upgrade: 2005 - 2011


  January 17th                  PHENIX pp, dA and Belle FFs                       5
Hardware Contributions for PHENIX, 2008-2011
Muon Trigger      Absorber for W-physics RPC efficiency hodoscopes




Design, QA        24 tons of SS-310 from
                                                 Design & assembly at NPL
                  ATLAS Tools, Lyons Illinois
                  Subcontract BNL to UIUC
                  Purchased with UIUC loan
                  Funding:
                     RIKEN $250,000
                     BNL     $136,222
                     NSF      $50,000
                     UIUC     $14,278
                     Sum $450,500


   January 17th    PHENIX pp, dA and Belle FFs                        6
Hardware Contributions for PHENIX, 2008-2011
Muon Trigger
Fullsize Prototype Half Octant for Run 2009
                           Absorber for W-physics RPC efficiency hodoscopes




Design, QA                24 tons of SS-310 from
                                                          Design & assembly at NPL
                          ATLAS Tools, Lyons Illinois
                          Subcontract BNL to UIUC
                          Purchased with UIUC loan
                          Funding:
                             RIKEN $250,000
                             BNL     $136,222
                             NSF      $50,000
                             UIUC     $14,278
                             Sum $450,500


    January 17th            PHENIX pp, dA and Belle FFs                        7
Hardware Contributions for PHENIX, 2008-2011
Muon Trigger      Absorber for W-physics RPC efficiency hodoscopes




Design, QA        24 tons of SS-310 from
                                                 Design & assembly at NPL
                  ATLAS Tools, Lyons Illinois
                  Subcontract BNL to UIUC
                  Purchased with UIUC loan
                  Funding:
                     RIKEN $250,000
                     BNL     $136,222
                     NSF      $50,000
                     UIUC     $14,278
                     Sum $450,500


   January 17th    PHENIX pp, dA and Belle FFs                        8
  Physics - Analysis - Instrumentation: Overall
  Plan for PHENIX & Belle Activities 2012-2014
Physics                 UIUC analysis                                Instrumentation Tasks
W-Physics             o quark and anti-quark                          muon trigger & RPC
→ Francesca             helicity distributions                        commissioning
  Giordano’s talk      (D. Jumper, P. Montuenga, Y..J. Kim )          operation + maintenance
Transverse            o transversity from Interference FF              (whole group + NPL techs)

Spin                  o precision AN at high pT                        → posters Emily Zarndt
                                                                         Francesca Giordano
→ Martin              o K Collins FF (Belle)
  Leitgab’s talk        (new GS , F. Giordano )                        MPC-FEE-upgrade
                                                                       (S. Wolin ) → Scott Wolin’s poster
Low x                 o gluon distribution at low x
                        at high parton densities                      MPC operation +
                       (New GS, I. Choi)                              + maintenance
Gluon Spin            o extend range to low x through                  (S. Wolin, C. McKinney, NPL techs)

→ Cameron               ALL for forward hadrons in MPC
  McKinney’s poster
                        (S. Wolin, C. McKinney)
                      o Hadron frag. functions (Belle)
                        (M. Leitgab)

      January 17th                     PHENIX pp, dA and Belle FFs                           9
Physics - Analysis - Instrumentation: Overall
Plan for PHENIX & Belle Activities 2012-2014
Physics              UIUC analysis                               Instrumentation Tasks
W-Physics         o quark and anti-quark                     muon trigger & RPC
                    helicity distributions                   commissioning
                                                             operation
                  The NSF funded PHENIX muon trigger upgrade is a + maintenance
                    (D. Jumper, P. Montuenga, Y..J. Kim )

Transverse        o transversity from Interference FF (whole group + NPL techs)
                  University based longterm instrumentation project.
Spin              o precision AN at high pT
                  Support critically depends
                  o K Collins FF (Belle) on U of I technicians (Dave
                  Northacker at RPC lab at BNL) and the support from
                     (new GS , F. Giordano )                  MPC-FEE-upgrade
Low x             several
                  o gluon graduate students and postdocs . (S. Wolin )
                            distribution at low x
                    at high parton densities                 MPC and low
                  Transverse spin physics with the MPC and Belleoperation +
                                                              + for graduate
                  x (New GS, I. Choi) MPC offer analysis topics maintenance
                     physics with the
Gluon Spin                                                    (S. Wolin, C.
                  o extendand postdocs working on the muon trigger. McKinney, NPL techs)
                  students range to low x through
                    ALL for forward hadrons in MPC
                    (S. physics and Belle
                  MPCWolin, C. McKinney) hadron fragmentation nicely align
                  o Hadron frag. our research on quark and gluon
                  with and extend functions (Belle)
                  structure of the nucleon.
                    (M. Leitgab)

   January 17th                    PHENIX pp, dA and Belle FFs                 10
PHENIX group at UIUC and at BNL Support NSF funded W-Trigger and MPC
                              BNL                                                                 BNL



                                       Ruizhe Yang
                                                           Scott Wolin               Martin Leitgab
                                                                         BNL
                                       Ph.D. 2010
                                       Goldman Sachs
John Koster
                   Young Jin Kim
Ph.D. 2010
PDRA RIKEN
                              BNL

                                                       Emily Zarndt
                                      Beau Meredith
                                       Ph.D. 2011                                   BNL     Pedro
                   Dave Northacker     PDRA Columbia                     Francesca Giordano Montuenga




                                   BNL                                                  Anselm Vossen
                                                                                        Assistant Scientist
                                                  Daniel Jumper
Cameron McKinneyth John Blackburn JhnJea Choipp Program at PHENIX Matthias Perdekamp IUCF, 11-2010
     December 8                     Polarized                                           11
                                                  (1) Develop RPC Expertise
      RPC R&D in Urbana                           (2) Improve RPC Performance
                                                  (3) Opportunity for Undergraduate Research
Cosmic ray test stand                                Flexible assembly of RPC prototypes
for RPCs                                             allows fast turn around testing different
                               Drift Chambers        plate materials, coatings, readout strip planes,
                                                     gases and rate stability using Fe-55 sources.
Scintillators




                                                         Fe55 Sources

                                    RPCs




                Track cosmics and
                study RPC response                     Max Candocia’s poster
                January 17th               PHENIX pp, dA and Belle FFs                    12
 Undergraduate research in the UIUC RPC Laboratory
undergraduate students sofar         Amahd, Zarah - SMU                   McCormick, Andrew - UIUC
                                     Bassett, Dan - UIUC                  Mucia, Nicholas - UIUC
18 UIUC, 7 ACU, 2 Muhlenberg College Bayse, Austin - ACU                  Natoli, Tyler - UIUC
 1 Illinois Wesleyan, 1 Dortmund,    Burnap, Alexander – UIUC             Rao, Gaurav - UIUC
 1 Carleton, 1 SMU                   Candocia, Max - UIUC                 Simpsong, Jessica - UIUC
                                     Deinlein, George – UIUC              Sparks, Nathan - ACU
17 CEU posters at DNP Meetings       Ebertle, Louisa - Carleton           Strack, Jason - UIUC
 4 REU students                      Goldberg, Leah - Illinois Wesleyan   Tech, Sebastian - Dortmund
                                     Ide, Justine - Muhlenberg            Tranchica, Zach - UIUC
Faculty summer visitors:             Johnson, Paul - UIUC                 Veicht, Aaron - UIUC
                                     Jumper, Daniel - ACU                 Watts, Cole - ACU
Rusty Towell, Don Isenhower,                                              Wood, John - ACU
                                     Kim, Hye Ryong - UIUC
Brett Fadem                          Kim, Yongsun - UIUC                  Wright, Ryan - ACU
                                     Kish, Jay - ACU                      Yoon Sungho - UIUC
UIUC students in grad school: Lee, Chang - UIUC                           Zarndt, Emily - UIUC
Chang Lee               Case Western Lichtenwalner, Phil - Muhlenberg
Andrew McCormick      Harvard
Nick Muchia           Northwestern      2005 – 2011 during
Tyler Natoli          U. of Chicago     NSF MRI for Muon Trigger
Aaron Veicht          Columbia
Sung Ho Yoon          MIT




    January 17th                  PHENIX pp, dA and Belle FFs                          13
Gluon Saturation at High Parton Densities
         at Small x : Color Glass Condensate


                                                            pT is balanced by
                                                            many gluons
                                   dilute parton
                                   system, deuteron       dense gluon
                                                          field , Au

                                    CGC test:
                                    Presence of dense gluon field in
                                    the Au nucleus leads to multiple
                                    scattering and parton can
                                    distribute its energy to many
                                    scattering centers  “Mono-jet
                                    signature”. D. Kharzeev, E. Levin, L.
                                    McLerran, Nucl.Phys.A748:627-640,2005


                                      January
                 PHENIX pp, dA and Belle FFs 17th
Probing for Saturation Effects in Hadron-Hadron
Correlations in d+Au with the Forward MPC
                                          Beau Meredith, Phys.Rev.Lett. 107 (2011) 172301
Experimental signature:                               N dAu  to back / N N- N-collision
                                                        back
                                             J dA   ~
(I)   Broadening in the correlation                            N pp  to back
                                                                  back
      of back-to-back jets or hadrons
                                                            Peripheral
(II) Suppression of away-side jets                          d-Au collisions
     or hadrons
The MPC is an NSF funded                                     Central
UIUC built forward EMC based                                  d-Au
                                                             collisions
on PbWO4 Crystals with APD
readout.
    MPC integrated in the
    piston of the muon
    spectrometer magnet.
                                           Away Side hadrons/jets in central d-Au
                                           suppressed by factor 5 at x~0.0005
                                           Mono-jets !? CGC ?

      January 17th            PHENIX pp, dA and Belle FFs
Probing for Saturation Effects in Hadron-Hadron
Correlations in d+Au with the Forward MPC
                                              Beau Meredith, Phys.Rev.Lett. 107 (2011) 172301
Experimental signature:                                   N dAu  to back / N N- N-collision
                                                            back
                                                 J dA   ~
(I)   Broadening in the correlation                                N pp  to back
                                                                      back
      of back-to-back jets or hadrons
                                                                Peripheral
(II) Suppression of away-side jets                              d-Au collisions
      or hadrons
The MPC is an NSF funded                                         Central
UIUC built forward EMC based                                      d-Au
                                                                 collisions
     PbWO4 Crystals with APD
on Kang, I. Vitev, H. Xing arXiv:1112.6021
  Z.
readout. FSR, cold nuclear matter effects
  pQCD + ISR,
     MPC integrated in the
     piston of the muon
     spectrometer magnet.
                                               Away Side hadrons/jets in central d-Au
                                               suppressed by factor 5 at x~0.0005
                                               Mono-jets !? CGC ?

      January 17th                PHENIX pp, dA and Belle FFs
Summary
o Our highest priority for the next funding period is the W-physics program
    support operations of the muon trigger detectors
     and electronics
    physics analysis + support for technical analysis tasks

o In the next funding period we expect to publish
     first parity violating asymmetries from Ws in the forward direction
     ALL at forward rapidity to constrain ΔG(x) at small x
     long paper on forward d-Au physics
     transverse di-hadron asymmetries in p-p
     Kaon Collins function and spin averaged FFs in Belle
o Continue active participation from undergraduate (including four
  year colleges) and graduate students


 January 17th             PHENIX pp, dA and Belle FFs                17

				
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