Leptophilic Signals of a Sneutrino (N)LSP and Flavor Biases from Flavor-Blind SUSY

Details Leptophilic Signals of a Sneutrino (N)LSP and Flavor Biases from Flavor-Blind SUSY Leptophilic Signals of a Sneutrino (N)LSP and Flavor Biases from Flavor-Blind SUSY

2010-03-29

arxiv.org/abs/1003.5664v2

Phys.Rev.D81:115003, 2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

43 pages, 24 figures. v2: Minor modifications; references added

Scientific paper

10.1103/PhysRevD.81.115003

Although the sneutrino is a viable NLSP candidate with gravitino LSP, spectra of this type occupy a part of SUSY parameter space in which collider signatures are poorly studied. In this paper we will extend previous work on this topic to include sneutrino NLSP spectra with non-minimal phenomenology. Generally, these spectra exhibit very leptophilic behavior, which can be easily observed at the LHC. We show that a variety of such spectra can be analysed with similar techniques, leading in each case to very suggestive evidence for complicated decay chains that end in sneutrinos. Amongst the variations considered, we find a simple class of spectra that produce signals with strong electron-muon asymmetries. These signals could naively be interpreted as evidence for lepton flavor violation, but can occur even with flavor-blind SUSY.

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