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High Energy Physics - Phenomenology

arXiv:1503.03444 (hep-ph)
[Submitted on 11 Mar 2015 (v1), last revised 1 Jun 2015 (this version, v3)]

Title:Inert Scalar Doublet Asymmetry as Origin of Dark Matter

Authors:Mikael Dhen, Thomas Hambye
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Abstract:In the inert scalar doublet framework, we analyze what would be the effect of a $B-L$ asymmetry that could have been produced in the Universe thermal bath at high temperature. We show that, unless the "$\lambda_5$" scalar interaction is tiny, this asymmetry is automatically reprocessed in part into an inert scalar asymmetry that could be at the origin of dark matter today. Along this scenario, the inert mass scale lies in the few-TeV range and direct detection constraints require that the inert scalar particles decay into a lighter dark matter particle which, as the inert doublet, is odd under a $Z_2$ symmetry.
Comments: 12 pages, 7 figures, t-channel contribution added, implies modifications of the scenario itself
Subjects: High Energy Physics - Phenomenology (hep-ph)
Report number: PHYS-TH/15-04
Cite as: arXiv:1503.03444 [hep-ph]
  (or arXiv:1503.03444v3 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1503.03444
Journal reference: Phys. Rev. D 92, 075013 (2015)
Related DOI: https://doi.org/10.1103/PhysRevD.92.075013

Submission history

From: Mikaël Dhen Mikaël Dhen [view email]
[v1] Wed, 11 Mar 2015 18:36:53 UTC (450 KB)
[v2] Fri, 20 Mar 2015 12:22:52 UTC (451 KB)
[v3] Mon, 1 Jun 2015 10:10:17 UTC (916 KB)
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