Signals of a Sneutrino (N)LSP at the LHC

Details Signals of a Sneutrino (N)LSP at the LHC Signals of a Sneutrino (N)LSP at the LHC

2009-11-22

arxiv.org/abs/0911.4132v2

Phys.Rev.D81:035012, 2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

41 pages, 13 figures. V2: Tau-tau background added and background discussion in subsection V.C modified. Short discussion abou

Scientific paper

10.1103/PhysRevD.81.035012

The sneutrino is a viable candidate for the NLSP in SUSY spectra with gravitino LSP. In this work we study the collider implications of this possibility. In particular, we investigate whether the LHC can distinguish it (at least, in some cases) from alternative spectra, such as those with a neutralino LSP. We show that there exists a complete family of experimentally allowed and theoretically motivated spectra with sneutrino NLSP, which exhibit very distinctive multilepton signals that are difficult to fake within the MSSM. We study these signals in detail, including the techniques necessary to find them. We demonstrate our analysis approach on simulations incorporating backgrounds.

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