Weak Scale Baryogenesis in a Supersymmetric Scenario with R-parity violation

Abstract

We investigate the connection between R-parity violation (RPV) in supersymmetric models and Baryogenesis. First we discuss in detail the assumptions of a theorem by Nanopoulos and Weinberg on the CP asymmetry generated from the decay of massive particles. In light of this statement, we analyse some interesting models of Baryogenesis through RPV. We then explore, in the context of RPV SUSY, the possibility to generate the baryon asymmetry through the out-of-equilibrium decay of a metastable Weakly Interacting Massive Particle (WIMP), as proposed in \cite{Cui:2012jh}. This setting is also motivated by the observed coincidence between the abundances of dark and baryonic matter. In this framework, we propose two models of out-of-equilibrium decay of a would-be cold relic, and compute the associated CP asymmetry. With a TeV-scale parent, the observed baryon abundance can be reproduced in these models when the stop is in the multi-TeV region. Furthermore, annihilation of the metastable particle into SM states must be characterised by a very weak coupling, $g\sim 10^{-2}$ and by a heavy mediator $m_{med}\sim 10$ TeV. These models can also accommodate stop masses far from the TeV scale, at the expense of weakening the explanation of the ${\Omega }_B-{\Omega }_{DM}$ coincidence.

31 pages, 12 figures. Revised version according to JHEP requirements: quantitative analyses added in Sec. 4, extended and revised list of refs, abstract and conclusions clarified

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Cited by in corpus (16)

• Probing Baryogenesis with Displaced Vertices at the LHC
• Twin Baryogenesis
• A Review of WIMP Baryogenesis Mechanisms
• Implications of an Improved Neutron-Antineutron Oscillation Search for Baryogenesis: A Minimal Effective Theory Analysis
• Supersymmetric Crevices: Missing Signatures of RPV at the LHC
• Gravitino Dark Matter and low-scale Baryogenesis
• A possible relation between leptogenesis and PMNS phases
• New signatures and limits on R-parity violation from resonant squark production
• Axino LSP Baryogenesis and Dark Matter
• Baryogenesis from a Modulus Dominated Universe
• LSP baryogenesis and neutron-antineutron oscillations from R-parity violation
• R-Parity Violating Supersymmetry and the 125 GeV Higgs signals
• R-Parity Violation Axiogenesis
• Signatures of Supersymmetry in Neutrino Telescopes
• Dark Matter and Baryon Asymmetry production from out-of-equilibrium decays of Supersymmetric states
• Leptogenesis in supersymmetry with one $L$ violating coupling