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Anti-Matter in Cosmic Rays : Backgrounds and Signals

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arxiv 0905.2144 v2 pith:57LBIMCG submitted 2009-05-13 hep-ph astro-ph.COastro-ph.HE

Anti-Matter in Cosmic Rays : Backgrounds and Signals

classification hep-ph astro-ph.COastro-ph.HE
keywords cosmicdarkdatamatterraysrecentaboveannihilation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Recent PAMELA and ATIC data seem to indicate an excess in positron cosmic rays above approximately 10 GeV which might be due to galactic Dark Matter particle annihilation. However the background of this signal suffers many uncertainties that make our task difficult in constraining Dark Matter or any other astrophysical explanation for these recent surprising data.

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