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Light asymmetric dark matter from new strong dynamics

By Mads T. Frandsen, Subir Sarkar and Kai Schmidt-Hoberg

Abstract

A ~5 GeV `dark baryon' with a cosmic asymmetry similar to that of baryons is a natural candidate for the dark matter. We study the possibility of generating such a state through dynamical electroweak symmetry breaking, and show that it can share the relic baryon asymmetry via sphaleron interactions, even though it has no electroweak interactions. The scattering cross-section on nucleons, estimated in analogy to QCD, is within reach of underground direct detection experiments.Comment: 4 pages, 4 figs. (RevTex

Topics: High Energy Physics - Phenomenology, Astrophysics - Cosmology and Nongalactic Astrophysics
Year: 2011
DOI identifier: 10.1103/PhysRevD.84.051703
OAI identifier: oai:arXiv.org:1103.4350
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