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Interpretation of AMS-02 Results: Correlations among Dark Matter Signals · Around

2013

Interpretation of AMS-02 Results: Correlations among Dark Matter Signals

De Simone, Andrea, Riotto, Antonio, Xue, Wei

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The AMS-02 collaboration has recently released data on the positron fraction $e^+/(e^-+e^+)$ up to energies of about 350 GeV.

If one insists on interpreting the observed excess as a dark matter signal, then we find it is best described by a TeV-scale dark matter annihilating into $\tau^+\tau^-$, although this situation is already severely constrained by gamma-ray measurements.
The annihilation into $\mu^+\mu^-$ is allowed by gamma-rays more than $\tau^+\tau^-$, but it gives a poorer fit to \textsc{AMS-02} data.
Moreover, since electroweak corrections induce correlations among the fluxes of stable particles from dark matter annihilations, the recent AMS-02 data imply a well-defined prediction for the correlated flux of antiprotons.

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