Baryogenesis with Superheavy Squarks

Details Baryogenesis with Superheavy Squarks Baryogenesis with Superheavy Squarks

2005-08-19

arxiv.org/abs/hep-ph/0508208v1

JCAP 0602 (2006) 008

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, LaTeX, 4 figures

Scientific paper

10.1088/1475-7516/2006/02/008

We consider a setup where R-parity is violated in the framework of split supersymmetry. The out-of-equilibrium decays of heavy squarks successfully lead to the generation of a baryon asymmetry. We restrict the R-parity violating couplings to the baryon number violating subset to keep the neutralino sufficiently stable to provide the dark matter. The observed baryon asymmetry can be generated for squark masses larger than 10^11 GeV, while neutralino dark matter induces a stronger bound of 10^13 GeV. Some mass splitting between left- and right-handed squarks may be needed to satisfy also constraints from gluino cosmology.

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