000205652 001__ 205652
000205652 005__ 20180913063008.0
000205652 0247_ $$2doi$$a10.1007/Jhep08(2014)014
000205652 022__ $$a1029-8479
000205652 02470 $$2ISI$$a000347888000006
000205652 037__ $$aARTICLE
000205652 245__ $$aWeak scale baryogenesis in a supersymmetric scenario with R-parity violation
000205652 260__ $$aNew York$$bSpringer$$c2014
000205652 269__ $$a2014
000205652 300__ $$a34
000205652 336__ $$aJournal Articles
000205652 520__ $$aWe 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 [1]. 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 similar to 10(-2) and by a heavy mediator m med similar to 10TeV. 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.
000205652 6531_ $$aSupersymmetry Phenomenology
000205652 700__ $$aRompineve, Fabrizio$$uEcole Polytech Fed Lausanne, Inst Theorie Phenomenes Phys, CH-1015 Lausanne, Switzerland
000205652 773__ $$k8$$tJournal Of High Energy Physics
000205652 909C0 $$0252443$$pITP$$xU10181
000205652 909CO $$ooai:infoscience.tind.io:205652$$particle
000205652 937__ $$aEPFL-ARTICLE-205652
000205652 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000205652 980__ $$aARTICLE