Enhanced Tau Lepton Signatures at LHC in Constrained Supersymmetric Seesaw

Details Enhanced Tau Lepton Signatures at LHC in Constrained Supersymmetric Seesaw Enhanced Tau Lepton Signatures at LHC in Constrained Supersymmetric Seesaw

2009-10-28

arxiv.org/abs/0910.5517v2

Phys.Rev.D80:115004,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 3 figures, references added

Scientific paper

10.1103/PhysRevD.80.115004

We discuss the possible enhancement of the tau lepton events at LHC when the left-handed stau doublet becomes light (which can be even lighter than the right-handed stau). This is illustrated in the constrained supersymmetric seesaw model where the slepton doublet mass is suppressed by the effects of a large neutrino Yukawa coupling. We study a few representative parameter sets in the sneutrino coannihilation regions where the tau sneutrino is NLSP and the stau coannihilation regions where the stau is NLSP both of which yield the thermal neutralino LSP abundance determined by WMAP.

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