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A dark matter scenario with two stable WIMPs which is consistent with the Fermi-LAT observations of gamma rays from the Galactic center and Omega Centauri

ORAL

Abstract

In our multicomponent dark matter scenario [1], the dominant particle -- the lightest Higgson $H^0$ -- has a firm upper bound of 125 GeV/c$^2$ for its mass, while the lightest neutralino $\chi^0$ is subdominant and presumably has a substantially higher mass. The predictions of our scenario are consistent with the Fermi-LAT observations of gamma rays from the Galactic center [2,3] and Omega Centauri [4]. [1] Dylan Blend, Reagan Thornberry, Alejandro Arroyo, Gabriel Frohaug, Caden LaFontaine, and Roland E. Allen, "A multicomponent dark matter scenario and the experimental evidence supporting it", submitted. [2] Christopher Karwin, Simona Murgia, Tim M. P. Tait, Troy A. Porter, and Philip Tanedo, "Dark matter interpretation of the Fermi-LAT observation toward the Galactic Center", Phys. Rev. D 95, 103005 (2017), arXiv:1612.05687 [hep-ph], and references therein. [3] Rebecca K. Leane and Tracy R. Slatyer, “Dark Matter Strikes Back at the Galactic Center”,arXiv:1904.08430 [astro-ph.HE], and references therein. [4] Anthony M. Brown, Richard Massey, Thomas Lacroix, Louis E. Strigari, Azadeh Fattahi, and Céline Boehm, "The glow of annihilating dark matter in Omega Centauri", arXiv:1907.08564 [astro-ph.HE].

Authors

  • Caden LaFontaine

    Texas A\&M University

  • Alejandro Arroyo

    Texas A\&M University

  • Reagan Thornberry

    Texas A\&M University

  • Dylan Blend

    Texas A\&M University

  • Gabriel Frohaug

    Texas A\&M University

  • Roland Allen

    Texas A\&M University