Soft RPV Through the Baryon Portal
arXiv:1304.7004 · doi:10.1007/JHEP03(2014)104
Abstract
Supersymmetric (SUSY) models with R-parity generically predict sparticle decays with invisible neutralinos, which yield distinctive missing energy events at colliders. Since most LHC searches are designed with this expectation, the putative bounds on sparticle masses become considerably weaker if R-parity is violated so that squarks and gluinos decay to jets with large QCD backgrounds. Here we introduce a scenario in which baryonic R-parity violation (RPV) arises effectively from soft SUSY-breaking interactions, but leptonic RPV remains accidentally forbidden to evade constraints from proton decay and FCNCs. The model features a global R-symmetry that initially forbids RPV interactions, a hidden R-breaking sector, and a heavy mediator that communicates this breaking to the visible sector. After R-symmetry breaking, the mediator is integrated out and an effective RPV A-term arises at tree level; RPV couplings between quarks and squarks arise only at loop level and receive additional suppression. Although this mediator must be heavy compared to soft masses, the model introduces no new hierarchy since viable RPV can arise when the mediator mass is near the SUSY breaking scale. In generic regions of parameter space, a light thermally-produced gravitino is stable and can be a viable dark matter candidate.
20 pages, 12 figures, references added, minor typos corrected
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Cited by in corpus (8)
- Flavored Dark Matter and R-Parity Violation
- Phenomenology of a Long-Lived LSP with R-Parity Violation
- Supersymmetric Crevices: Missing Signatures of RPV at the LHC
- Weak Scale Baryogenesis in a Supersymmetric Scenario with R-parity violation
- Study of Baryonic R-Parity Violating MSSM Using Jet Substructure Technique at the 14 TeV LHC
- Sneutrino Higgs models explain lepton non-universality in CMS excesses
- Gravitino Dark Matter and Flavor Symmetries
- Multi-hadron final states in RPV supersymmetric models with extra matters