AMS-02 observations of antiprotons, and Planck limits on dark matter annihilation -- potential support for a multicomponent dark matter scenario

Several independent analyses of the antiprotons observed by AMS-02 suggest that the observations are consistent with the annihilation of dark matter particles with a mass somewhat below 100 GeV~[1-4]. We will describe a multicomponent dark matter scenario, with a subdominant neutralino and a dominant higgson~[5] of mass $\sim$75 GeV, which is fully consistent with these results, and also with the Planck limits~[6]. [1] Alessandro Cuoco, Michael Krämer, and Michael Korsmeier, Phys. Rev. Lett. 118, 191102 (2017). [2] Ming-Yang Cui, Qiang Yuan, Yue-Lin Sming Tsai, and Yi-Zhong Fan, Phys. Rev. Lett. 118, 191101 (2017). [3] Ilias Cholis, Tim Linden, and Dan Hooper, Phys. Rev. D 99, 103026 (2019), arXiv:1903.02549 [astro-ph.HE], and references therein.. [4] Alessandro Cuoco, Jan Heisig, Lukas Klamt, Michael Korsmeier, and Michael Kramer, Phys. Rev. D 99, 103014 (2019), arXiv:1903.01472 [astro-ph.HE], and references therein. [5] Reagan Thornberry, Gabriel Frohaug, Caden LaFontaine, Bailey Tallman, Alex Behne, Steven Sellers, Matthew Sadler, and Roland E. Allen, ``Present and potential future experimental evidence supporting a multicomponent dark matter scenario'', European Physical Journal Special Topics (in press), and references therein. [6] Planck Collaboration, arXiv:1807.06209.