Implications of the first AMS-02 antiproton data for dark matter

Abstract

The implications of the first AMS-02 $\bar{p}/p$ data for the propagation of cosmic rays and the properties of dark matter (DM) are discussed. Using various diffusive re-acceleration (DR) propagation models, one can derive very conservative upper limits on the DM annihilation cross sections. The limits turned out to be compatible with that from the Ferm-LAT gamma-ray data on the dwarf spheroidal satellite galaxies. The flattening of the $\bar{p}/p$ spectrum above $\sim 100$~GeV in the current data still leaves some room for TeV scale DM particles. More antiproton data at high kinetic energies are needed to constrain the properties of the DM particles.

Talk given at the International Conference on Gravitation and Cosmology, May 5-8, 2015, Beijing, to appear in the proceedings

References in corpus (7)

• Observation of an anomalous positron abundance in the cosmic radiation
• Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data
• Quantitative study of the AMS-02 electron/positron spectra: implications for the pulsar and dark matter properties
• What Does The PAMELA Antiproton Spectrum Tell Us About Dark Matter?
• Dark matter for excess of AMS-02 positrons and antiprotons
• Upper limits on DM annihilation cross sections from the first AMS-02 antiproton data
• Wino Dark Matter in light of the AMS-02 2015 Data

Cited by in corpus (1)

• A systematic study on the cosmic ray antiproton flux