Aidnogenesis via Leptogenesis and Dark Sphalerons
2011 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, Vol. 3Article in journal (Refereed) Published
We discuss aidnogenesis,(1) i.e. 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 similar to 6GeV, 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.
Place, publisher, year, edition, pages
2011. Vol. 3
Cosmology of Theories beyond the SM, Beyond Standard Model, Neutrino Physics
IdentifiersURN: urn:nbn:se:kth:diva-107137DOI: 10.1007/JHEP03(2011)014ISI: 000289295200014OAI: oai:DiVA.org:kth-107137DiVA: diva2:574749
QC 201305072012-12-062012-12-062013-05-07Bibliographically approved