The same-sign top signature of R-parity violation

Abstract

Baryonic R-parity violation could explain why low-scale supersymmetry has not yet been discovered at colliders: sparticles would be hidden in the intense hadronic activity. However, if the known flavor structures are any guide, the largest baryon number violating couplings are those involving the top/stop, so a copious production of same-sign top-quark pairs is in principle possible. Such a signal, with its low irreducible background and efficient identification through same-sign dileptons, provides us with tell-tale signs of baryon number violating supersymmetry. Interestingly, this statement is mostly independent of the details of the supersymmetric mass spectrum. So, in this paper, after analyzing the sparticle decay chains and lifetimes, we formulate a simplified benchmark strategy that covers most supersymmetric scenarios. We then use this information to interpret the same-sign dilepton searches of CMS, draw approximate bounds on the gluino and squark masses, and extrapolate the reach of the future 14 TeV runs.

32 pages, 12 figures, 3 tables, 1 appendix

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• Supersymmetric Crevices: Missing Signatures of RPV at the LHC
• Deep learning for the R-parity violating supersymmetry searches at the LHC
• Study of Baryonic R-Parity Violating MSSM Using Jet Substructure Technique at the 14 TeV LHC
• New signatures and limits on R-parity violation from resonant squark production
• Stashing the stops in multijet events at the LHC
• Large Hadron Collider constraints on a light baryon number violating sbottom coupling to a top and a light quark
• Towards a new paradigm for quark-lepton unification
• Signs of Tops from Highly Mixed Stops
• The least constrained supersymmetry with R-parity violation
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