PAMELA and dark matter

Assuming that the positron excess in PAMELA satellite data is a consequence of annihilations of cold dark matter, we consider from a model-independent perspective if the data show a preference for the spin of dark matter, and find that they do not. We then perform a general analysis of annihilations...

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Bibliographic Details
Published in:Physics letters. B 2009-02, Vol.672 (2), p.141-146
Main Authors: Barger, V., Keung, W.-Y., Marfatia, D., Shaughnessy, G.
Format: Article
Language:English
Subjects:
Exact sciences and technology
NONLUMINOUS MATTER
Nuclear physics
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
POSITRONS
SATELLITES
SPIN
The physics of elementary particles and fields
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Summary:Assuming that the positron excess in PAMELA satellite data is a consequence of annihilations of cold dark matter, we consider from a model-independent perspective if the data show a preference for the spin of dark matter, and find that they do not. We then perform a general analysis of annihilations into two-body states to determine what weighted combination of channels best describes the data.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2009.01.016