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The PAMELA positron anomaly: dark matter or a cosmic pevatron?

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If you have a question about this talk, please contact Baojiu Li .

Abstract: There has been considerable excitement generated by recent anomalies in galactic cosmic ray and gamma-ray observations, indicative of dark matter annihilation or decay. It is essential to have a reliable evaluation of the astrophysical background in order to evaluate such claims. I will focus on the PAMELA , Fermi and HESS data and discuss whether these can be accommodated in the ‘standard model’ of galactic cosmic ray origin and propagation or whether new physics is really needed.

(Refs: Phys.Rev.D80:123017,2009, Phys.Rev.Lett.103:081104,2009)

This talk is part of the Theoretical Physics Colloquium series.

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