Stau LSP Phenomenology: Two- versus Four-Body Decay Modes and Resonant Single Slepton Production at the LHC as an Example

Details Stau LSP Phenomenology: Two- versus Four-Body Decay Modes and Resonant Single Slepton Production at the LHC as an Example Stau LSP Phenomenology: Two- versus Four-Body Decay Modes and Resonant Single Slepton Production at the LHC as an Example

2008-08-22

arxiv.org/abs/0808.3079v2

Phys.Rev.D79:016002,2009; Erratum-ibid.79:019902,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 13 figures; typos corrected, title changed, references added: final version accepted by PRD

Scientific paper

10.1103/PhysRevD.79.016002 10.11

We investigate B3 mSUGRA models, where the lightest scalar tau, stau_1, is the LSP. B3 models allow for lepton number and R-parity violation; the LSP can thus decay. We assume one non-zero B3 coupling lambda'_ijk at M_GUT, which generates further B3 couplings at M_Z. We study the RGEs and give numerical examples. The new couplings lead to additional stau_1 decays, providing distinct collider signatures. We classify the stau_1 decays and describe their dependence on the mSUGRA parameters. We exploit our results for single slepton production at the LHC. As an explicit numerical example, we investigate single smuon production, focussing on like-sign dimuons in the final state. Also considered are final states with three or four muons.

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