Signals of a Sneutrino (N)LSP at the LHC

Abstract

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.

41 pages, 13 figures. V2: Tau-tau background added and background discussion in subsection V.C modified. Short discussion about early discovery in subsection V.D added. Minors changes and refs. added

References in corpus (24)

• PYTHIA 6.4 Physics and Manual
• The Well-Tempered Neutralino
• General Gauge Mediation
• Flavor in Supersymmetry with an Extended R-symmetry
• Higgs Physics as a Window Beyond the MSSM (BMSSM)
• Sneutrino cold dark matter, a new analysis: relic abundance and detection rates
• Implementing General Gauge Mediation
• BRIDGE: Branching Ratio Inquiry/Decay Generated Events
• Cosmological Constraints on Gravitino LSP Scenario with Sneutrino NLSP
• Supersymmetry with a Chargino NLSP and Gravitino LSP
• A New Approach to mu-Bmu
• The Standard Model and Supersymmetric Flavor Puzzles at the Large Hadron Collider
• Collider signatures of gravitino dark matter with a sneutrino NLSP
• Sneutrino NLSP Scenarios in the NUHM with Gravitino Dark Matter
• Surveying the Phenomenology of General Gauge Mediation
• Neutrino Mass, Sneutrino Dark Matter and Signals of Lepton Flavor Violation in the MRSSM
• Flavorful Supersymmetry
• Probing new physics with flavor physics (and probing flavor physics with new physics)
• Higgs Boson Exempt No-Scale Supersymmetry and its Collider and Cosmology Implications
• Low-scale gaugino mediation, lots of leptons at the LHC
• A Heavy Higgs and a Light Sneutrino NLSP in the MSSM with Enhanced SU(2) D-terms
• Leptogenic Supersymmetry
• Enhanced Tau Lepton Signatures at LHC in Constrained Supersymmetric Seesaw
• Signatures of Sneutrino NLSP in Gravitino Dark Matter Scenario at the LHC

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