Study of long-lived heavy charged particles produced in pp collisions at energy 13 TeV

Abstract

We are interested in long-lived heavy charged particles because they would be possible SUSY particle candidats. This paper shows our preliminary results of long-lived heavy charged particles generation using  PYTHIA 8. More than 10⁷ events have been generated with pp  collisions at energy in the center of mass = 13 TeV and about  3.27 10⁵  long-lived heavy charged particles candidates have been found in the geometric acceptance of the LHCb detector. Long-lived  heavy charged particles has mass 1.025 TeV/c² and lifetime   157.7 nanoseconds, therefore they can travel throughout all subdetectors.  We try not only calculate their acceptance in function of  transverse momentum  and rapidity but also combine a pair of candidats  with opposite charge in order to reconstruct their invariant mass. In the next step, we have intention to identify stau using the informations from subdetectors such as the inner tracker and the muon chambers.