Cogeneration of dark matter and baryons by non-standard-model sphalerons in unified models
Journal
Journal of High Energy Physics
Journal Issue
10
Pages
UNSP 129
Date Issued
2013
Author(s)
Barr, S. M.
Abstract
Sphalerons of a new gauge interaction can convert a primordial asymmetry in B or L into a dark matter asymmetry. From the equilibrium conditions for the sphalerons of both the electroweak and the new interactions, one can compute the ratios of B, L, and X, where X is the dark matter number, thus determining the mass of the dark matter particle fairly precisely. Such a scenario can arise naturally in the context of unification with larger groups. An illustrative model embeddable in SU(6) × SU(2) ⊂ E6 is described in detail as well as an equally simple model based on SU(7). © SISSA 2013.
Type
journal article