• Corpus ID: 118352427

The Price of a Dark Matter Annihilation Interpretation of AMS-02 Data

  title={The Price of a Dark Matter Annihilation Interpretation of AMS-02 Data},
  author={Vassilis C. Spanos},
  journal={arXiv: High Energy Physics - Phenomenology},
  • V. Spanos
  • Published 30 December 2013
  • Physics
  • arXiv: High Energy Physics - Phenomenology
We discuss challenges to a dark matter annihilation interpretation of the excess positron fraction in the cosmic rays observed by the PAMELA, Fermi-LAT and AMS-02 collaborations. The spectra of positrons from annihilations into the leptonic two-body final states like $\tau^+ \tau^-$ or $\mu^+ \mu^-$, fit well the AMS-02 data for the positron ratio and the electron flux. Furthermore, we discuss the hadronic annihilation channels $b \bar{b}$ and $W^+ W^-$. However, this interpretation requires a… 

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