Non-Neutralino LSPs in mSUGRA with R-Parity Violation and their Signatures at Hadron Colliders
by
Sebastian Grab
→
Europe/London
OC 218
OC 218
Description
The most widely studied supersymmetric scenario is the minimal supersymmetric stan-
dard model (MSSM). In this model, lepton- and baryon-number violating interactions are
suppressed by a discrete symmetry, R-Parity or Proton Hexality, to keep the proton stable.
However it is sufficient to forbid only lepton- or baryon-number violation. We thus extend
minimal supergravity (mSUGRA) models by adding an R-Parity violating operator at the
unification scale.
This can change the supersymmetric spectrum leading on the one hand to a sneutrino,
smuon or squark as the lightest supersymmetric particle (LSP). On the other hand, a wide
parameter region is reopened, where the lightest stau is the LSP. We investigate in detail
the conditions leading to non-neutralino LSP scenarios. It is vital to know the nature
of the LSP, because supersymmetric particles normally cascade decay down to the LSP
at collider experiments. We present typical Tevatron and LHC signatures. Promising
signatures are multi-lepton final states, high-pT muons and jets, four jet events and like
sign muon events.
