Docstoc

Exercises

Document Sample
Exercises Powered By Docstoc
					                                                        Exercises
                                                       Using Bubble
                                                        Chamber
                                                       Photographs
http://teachers.web.cern.ch/teachers/archiv/HST2005/bubble_chambers/BCwebsite/index.htm
1. What is the
direction of the
magnetic field if the
incoming beam is of
K- particles?
                                  A
2. How many charged particles leave point A ?
                                                2
                              A
3. Is the event at point A, a decay or a collision ?
                            a collision
                                 B


4. What can we say about the particle that produces the
event at point B; what is it’s charge?
                            It is a neutral particle
                      p   +




              p   -

                                B


5. The particles leaving the decay point B are pions p .
What are their charges?
                                                                            E
6. Connect point D with E


Does the neutral particle
that decays at point D
come from point C or A ?


                                                                        D
 From the kink at point C

                                                                       C

 For justification of method, click here:
                                                                       A
 http://teachers.web.cern.ch/teachers/archiv/HST2005/bubble_chambers/BCwebsite/articles/V0_decays.pdf
                        E




7. Which of the
particles that travel
between points D
and E has the larger
momentum?

                        D
The positive particle
8. What particle
travels between
points A and C?
W -, K -, S + or X - ?                                         C

                                                            A
       W-
 http://teachers.web.cern.ch/teachers/archiv/HST2005/bubble_chambers/BCwebsite/index.htm

				
DOCUMENT INFO