Baryogenesis with superheavy squarks

Huber, Stephan J (2006) Baryogenesis with superheavy squarks. Journal of Cosmology and Astroparticle Physics, 2006 (2). 008. ISSN 1475-7516

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We consider a set-up 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 1011 GeV, while neutralino dark matter induces a stronger bound of 1013 GeV. Some mass splitting between left- and right-handed squarks may be needed to also satisfy constraints from gluino cosmology.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Stephan Huber
Date Deposited: 06 Feb 2012 21:16
Last Modified: 23 Jul 2012 12:48
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