Speaker
Ms
Anna Skachkova
(JINR)
Description
The lepton pair production in collisions of antiproton beam (E_beam = 14 GeV) with proton target is studied on the basis of event samples simulated with PYTHIA6 generator. Considered the quark level subprocess which goes through the production of virtual photon which converts into lepton pair (q qbar --> gamma* --> l+l-). The distributions of different kinematical variables which may be useful for the design of the muon system and the electromagnetic calorimeter of the detector of PANDA experiment at FAIR are presented. The analysis of these distribution shows the possibility to measure the proton structure function in a new kinematical region defined by the time-like values of the square of the momentum transferred 1 < Q^2 < 6.25 GeV^2 and withing a rather wide interval 0.05 < x < 0.7 of Bjorken x-variable. The problems due to the presence of fake leptons that appear from meson decays, as well as due to the background caused by minimum bias events and other QCD processes, are also discussed. The set of cuts which allows one to separate the signal events with lepton pairs from this kind of background events is proposed.
Primary author
Ms
Anna Skachkova
(JINR)
Co-authors
Dr
Gennady Alexeev
(JINR)
Prof.
Nikolay Skachkov
(JINR)
