Charge Asymmetric Cosmic Rays as a probe of Flavor Violating Asymmetric Dark Matter

Abstract

The recently introduced cosmic sum rules combine the data from PAMELA and Fermi-LAT cosmic ray experiments in a way that permits to neatly investigate whether the experimentally observed lepton excesses violate charge symmetry. One can in a simple way determine universal properties of the unknown component of the cosmic rays. Here we attribute a potential charge asymmetry to the dark sector. In particular we provide models of asymmetric dark matter able to produce charge asymmetric cosmic rays. We consider spin zero, spin one and spin one-half decaying dark matter candidates. We show that lepton flavor violation and asymmetric dark matter are both required to have a charge asymmetry in the cosmic ray lepton excesses. Therefore, an experimental evidence of charge asymmetry in the cosmic ray lepton excesses implies that dark matter is asymmetric.

12 pages, 8 figures. Revised version to match the published version

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Cited by in corpus (10)

• Asymmetric Dark Matter: Theories, Signatures, and Constraints
• Constraints on dark matter annihilation from AMS-02 results
• Cosmic Coincidence and Asymmetric Dark Matter in a Stueckelberg Extension
• Decaying Asymmetric Dark Matter Relaxes the AMS-Fermi Tension
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• Hints of a Charge Asymmetry in the Electron and Positron Cosmic-Ray Excesses
• Indirect Detection Signatures for the Origin of Asymmetric Dark Matter
• Model independent interpretation of recent CR lepton data after AMS-02
• Continuous Flavor Symmetries and the Stability of Asymmetric Dark Matter