6533b82afe1ef96bd128b949
RESEARCH PRODUCT
Aidnogenesis via Leptogenesis and Dark Sphalerons
Basudeb DasguptaMattias BlennowNuria RiusEnrique Fernandez Martinezsubject
PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Nuclear and High Energy PhysicsParticle physicsmedia_common.quotation_subjectDark matterHigh Energy Physics::PhenomenologyFOS: Physical sciencesFísicaAstrophysics::Cosmology and Extragalactic AstrophysicsAsymmetrySphaleronStandard ModelDark matter haloBaryonHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)LeptogenesisAnomaly (physics)Astrophysics - High Energy Astrophysical Phenomenamedia_commondescription
We discuss aidnogenesis, the generation of a dark matter asymmetry via new sphaleron processes associated to an extra non-abelian gauge symmetry common to both the visible and the dark sectors. Such a theory can naturally produce an abundance of asymmetric dark matter which is of the same size as the lepton and baryon asymmetries, as suggested by the similar sizes of the observed baryonic and dark matter energy content, and provide a definite prediction for the mass of the dark matter particle. We discuss in detail a minimal realization in which the Standard Model is only extended by dark matter fermions which form "dark baryons" through an SU(3) interaction, and a (broken) horizontal symmetry that induces the new sphalerons. The dark matter mass is predicted to be approximately 6 GeV, close to the region favored by DAMA and CoGeNT. Furthermore, a remnant of the horizontal symmetry should be broken at a lower scale and can also explain the Tevatron dimuon anomaly.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-09-16 |