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Enhancing dark matter annihilation into neutrinos
Max-Planck-Institut für Kernphysik, Heidelberg, Germany.
2010 (English)In: Physical Review D, ISSN 1550-7998, Vol. 82, no 12, 123529- p.Article in journal (Refereed) Published
Abstract [en]

We perform a detailed and quasi model-independent analysis of direct annihilation of dark matter into neutrinos. Considering different cases for scalar and fermionic dark matter, we identify several settings in which this annihilation is enhanced, contrary to some statements in the literature. The key point is that several restrictions of, e.g., a supersymmetric framework do not hold in general. The mass generation mechanism of the neutrinos plays an important role, too. We illustrate our considerations by two examples that are not (as usually) suppressed by the smallness of the neutrino mass, for which we also present a numerical analysis. Our results can be easily used as guidelines for model building.

Place, publisher, year, edition, pages
2010. Vol. 82, no 12, 123529- p.
Keyword [en]
Physics, Search, Model
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-150057DOI: 10.1103/PhysRevD.82.123529ISI: 000286745500003ScopusID: 2-s2.0-78651310864OAI: diva2:742205

QC 20140901

Available from: 2014-09-01 Created: 2014-08-29 Last updated: 2014-09-01Bibliographically approved

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Merle, Alexander
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