AMS-02 observations of antiprotons -- potential evidence for indirect detection of a new dark matter WIMP with a mass of about 70 GeV

The calculations by Bailey Tallman discussed in an accompanying talk predict a dark matter particle with a mass of about 70 GeV and a cross-section (times velocity) for annihilation in the present universe of about 1.2 x 10^-26 cm³/s. In this talk we discuss how these results are consistent with an interpretation that the antiprotons observed by the satellite experiment AMS-02 are evidence for indirect detection of dark matter annihilation, with reference to several independent analyses [1-5].

[1] Alessandro Cuoco, Jan Heisig, Michael Korsmeier, and Michael Kramer, "Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays'', JCAP 10, 053 (2017), arXiv:1704.08258 [astro-ph.HE].

[2] Alessandro Cuoco, Michael Kramer, and Michael Korsmeier, "Novel dark matter constraints from antiprotons in the light of AMS-02'', Phys. Rev. Lett. 118, 191102 (2017), arXiv:1610.03071 [astro-ph.HE].

[3] Ming-Yang Cui, Qiang Yuan, Yue-Lin Sming Tsai, and Yi-Zhong Fan, "Possible dark matter annihilation signal in the AMS-02 antiproton data'', Phys. Rev. Lett. 118, 191101 (2017), arXiv:1610.03840 [astro-ph.HE].

[4] Ilias Cholis, Tim Linden, and Dan Hooper, "A Robust Excess in the Cosmic-Ray Antiproton Spectrum: Implications for Annihilating Dark Matter'', Phys. Rev. D 99, 103026 (2019), arXiv:1903.02549 [astro-ph.HE].

[5] Alessandro Cuoco, Jan Heisig, Lukas Klamt, Michael Korsmeier, and Michael Kramer, "Scrutinizing the evidence for dark matter in cosmic-ray antiprotons'', Phys. Rev. D 99, 103014 (2019), arXiv:1903.01472 [astro-ph.HE].