Sneutrino NLSP Scenarios in the NUHM with Gravitino Dark Matter

Abstract

We analyze scenarios in which some flavour of sneutrino is the next-to-lightest supersymmetric particle (NLSP), assuming that the gravitino is the lightest supersymmetric particle (LSP) and provides the cold dark matter. Such scenarios do not arise in the constrained supersymmetric extension of the Standard Model (CMSSM) with universal gaugino and scalar masses input at the GUT scale. However, models with non-universal Higgs masses (NUHM) do allow scenarios with a sneutrino NLSP, which are quite generic. We illustrate how such scenarios may arise, analyze the possible metastable sneutrino lifetime, and explore the theoretical, phenomenological, experimental and cosmological constraints on such scenarios. We also discuss the collider signatures of such scenarios, how they may be distinguished from neutralino LSP scenarios, and how different flavours of sneutrino NLSP may be distinguished.

29 pages, 13 eps figures

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Cited by in corpus (14)

• Dark Matter Candidates - Axions, Neutralinos, Gravitinos, and Axinos
• Right-handed sneutrino dark matter in the NMSSM
• Leptogenesis, Gravitino Dark Matter and Entropy Production
• Axions and saxions from the primordial supersymmetric plasma and extra radiation signatures
• Stop on Top: SUSY Parameter Regions, Fine-Tuning Constraints
• A Heavy Higgs and a Light Sneutrino NLSP in the MSSM with Enhanced SU(2) D-terms
• Supersymmetric mass spectra for gravitino dark matter with a high reheating temperature
• Long-Lived stop at the LHC with or without R-parity
• Determination of Non-Universal Supergravity Models at the Large Hadron Collider
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• Right-handed sneutrino and gravitino multicomponent dark matter in light of neutrino detectors
• Modified Supersymmetric Dark Sectors
• Search for squarks and gluinos in $pp$ collisions at $\sqrt{s}=13$ TeV and $13.6$ TeV in events with $\tau$-leptons, jets and missing transverse momentum using the ATLAS detector