Coy Dark Matter and the anomalous magnetic moment

Mar 13, 2014
5 pages
Published in:
  • Phys.Rev.D 90 (2014) 5, 053007
  • Published: Sep 11, 2014
e-Print:

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Abstract: (APS)

Coy dark matter removes the tension between the traditional WIMP paradigm of dark matter and the latest exclusion bounds from direct detection experiments. In this paper we present a leptophilic coy dark matter model that, on top of explaining the spatially extended 1–5 GeV γ-ray excess detected at the galactic center, reconciles the measured anomalous magnetic moment of muon with the corresponding standard model prediction. The annihilation channel of dark matter is χχττ¯ with the dark matter mass mχ=9.43(-0.52+.063stat)(±1.2sys)GeV given by best-fit of the γ-ray excess. Fitting the measured anomalous magnetic moment of the muon requires instead a pseudoscalar mediator with a minimal mass ma=12-3+7GeV.

Note:
  • added references, some minor corrections
  • 95.35.+d
  • 13.40.Em
  • 95.85.Pw
  • muon: magnetic moment
  • dark matter: mass
  • dark matter: direct detection
  • dark matter: annihilation
  • pseudoscalar particle: annihilation
  • pseudoscalar particle: magnetic moment
  • mediation