Speaker
Martin Niegel
(Institut fuer Experimentelle Kernphysik)
Description
he direct production of neutralino-chargino pairs in the mSUGRA scenario with decays
to a pure trilepton final state has a significant cross section at low neutralino
masses and is a viable SUSY discovery channel at the LHC. The main Standard Model
background are from Z/gamma + jets, WZ/gamma and ttbar channels where dileptons
appear from Z decays and a third lepton is coming either from W decay or jets. The
large total and missing transverse energy of the event used for other SUSY channels
is not efficient for the direct production of low mass gauginos thus making isolation
and identification of fake leptons a major task for the trilepton signature.
We evaluate signal selection criteria using the CMS detector simulation. A 5 sigma
signal can be observed in the opposite sign same flavor dilepton invariant
mass at an integrated luminosity above 10 fb-1 for m(1/2) < 170 GeV.
Author
Martin Niegel
(Institut fuer Experimentelle Kernphysik)
