MeV Dark Matter: Has It Been Detected?

Preprint

1 October 2003

preprint
Published by arXiv in arXiv

Abstract

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.

Keywords

ANNIHILATION CROSS
RECENT DETECTION
GALACTIC BULGE
DARK MATTER
GAMMA RAYS
KEV GAMMA
PARTICLE
MEV DARK
MATTER

All Related Versions

Version 1, 2003-09-25, ArXiv
Version 2, 2003-10-01, ArXiv
Version 3, 2003-10-06, ArXiv
Published version: Physical Review Letters, 92 (10), 101301.

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