Anti-Matter in Cosmic Rays : Backgrounds and Signals

Abstract

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.Comment: Proceedings for XLIVemes rencontres de Moriond, Electroweak Interactions And Unified Theories sessio