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High Energy Physics - Phenomenology

arXiv:1308.1089 (hep-ph)
[Submitted on 5 Aug 2013 (v1), last revised 19 Feb 2014 (this version, v2)]

Title:Significant Enhancement of Neutralino Dark Matter Annihilation from Electroweak Bremsstrahlung

Authors:Torsten Bringmann, Francesca Calore
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Abstract:Indirect searches for the cosmological dark matter have become ever more competitive during the past years. Here, we report the first full calculation of leading electroweak corrections to the annihilation rate of supersymmetric neutralino dark matter. We find that these corrections can be huge, partially due to contributions that have been overlooked so far. Our results imply a significantly enhanced discovery potential of this well motivated dark matter candidate with current and upcoming cosmic ray experiments, in particular for gamma rays and models with somewhat small annihilation rates at tree level.
Comments: 7 pages revtex4; 4 figures. Minor changes to match published version
Subjects: High Energy Physics - Phenomenology (hep-ph); Cosmology and Nongalactic Astrophysics (astro-ph.CO); High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:1308.1089 [hep-ph]
  (or arXiv:1308.1089v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1308.1089
Journal reference: Phys. Rev. Lett. 112, 071301 (2014)
Related DOI: https://doi.org/10.1103/PhysRevLett.112.071301

Submission history

From: Torsten Bringmann [view email]
[v1] Mon, 5 Aug 2013 20:00:00 UTC (84 KB)
[v2] Wed, 19 Feb 2014 17:38:45 UTC (409 KB)
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