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arxiv: astro-ph/0309686 · v3 · submitted 2003-09-25 · 🌌 astro-ph · hep-ph

MeV Dark Matter: Has It Been Detected?

classification 🌌 astro-ph hep-ph
keywords darkmatterdiscussobservedparticleaccountannihilationannihilations
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We discuss the possibility that the recent detection of 511 keV gamma-rays from the galactic bulge, as observed by INTEGRAL, is a consequence of low mass (~MeV) particle dark matter annihilations. We discuss the type of halo profile favored by the observations as well as the size of the annihilation cross section needed to account for the signal. We find that such a scenario is consistent with the observed dark matter relic density and other constraints from astrophysics and particle physics.

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Cited by 1 Pith paper

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    Interprets Super-Kamiokande antineutrino excess as s-wave annihilating dark matter with mass in the tens of MeV, predicting signals for JUNO.