Cosmic-Ray Positrons Strongly Constrain Leptophilic Dark Matter

  title={Cosmic-Ray Positrons Strongly Constrain Leptophilic Dark Matter},
  author={Isabelle John and Tim Linden},
Cosmic-ray positrons have long been considered a powerful probe of dark matter annihilation. In particular, myriad studies of the unexpected rise in the positron fraction have debated its dark matter or pulsar origins. In this paper, we instead examine the potential for extremely precise positron measurements by AMS-02 to probe hard leptophilic dark matter candidates that do not have spectral features similar to the bulk of the observed positron excess. Utilizing a detailed cosmic-ray… Expand
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