INFN-LNF Laboratori Nazionali di Frascati
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11:30
(H)ALPing the 511 keV line: A thermal DM interpretation of the 511 keV emission
Speaker: Giulio Marino (Istituto Nazionale di Fisica Nucleare) We propose a novel framework where MeV-scale Dirac Dark Matter annihilates into axion-like particles, providing a natural explanation for the 511 keV gamma-ray line observed in the Galactic Center. The relic abundance is determined by p-wave annihilation into two axion-like particles, while s-wave annihilation into three axion-like …
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