Freiburg 2008 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 15: Beyond the Standard Model (Theorie) I
T 15.4: Vortrag
Montag, 3. März 2008, 17:30–17:45, KGI-HS 1021
Resonant single slepton production with a stau LSP — Herbi Dreiner1, •Sebastian Grab1, and Maike Trenkel2 — 1Physikalisches Institut, Bonn, Germany — 2MPI für Physik, München, Germany
Minimal supergravity (mSUGRA) models for the MSSM provide a scalar tau beside a neutralino as lightest supersymmetric particle (LSP) canditate. For cosmological reasons, a stable LSP has to be be electrically and color neutral. Therefore, the region with a stau LSP is excluded. If R-Parity is violated, the stau will decay into SM particles and does not contribute to dark matter anymore. That reopens the stau LSP parameter space.
We assume mSUGRA models with a stau LSP with only one lepton number violating operator at the GUT scale. This operator will generate additional R-Parity violating couplings at the electroweak scale, violating the same lepton number. We discuss the phenomenology of resonant single slepton production at the LHC within mSUGRA scenarios with a stau LSP. We point out that the production and the decay of the slepton can be driven by different R-Parity violating operators. We classify possible signatures and give signal rates for like sign muon events.