Can annihilating dark matter be lighter than a few GeVs?

2002/08/31 by C. Boehm, C Boehm, T. A. Ensslin +3 · 4 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph

paper · pdf · doi:10.1088/0954-3899/30/3/004

published as J.Phys.G30:279-286,2004 · 4 pages. No figure. Values corrected (last column Table.1). Text clarified. Conclusions unchanged

arxiv created 2003/06/26 · openalex publication_date 2004/01/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We estimate the gamma ray fluxes from the residual annihilations of Dark Matter particles having a mass mdm ∈ [MeV, O(GeV)] and compare them to observations. We find that particles lighter than O(100 MeV) are excluded unless their cross section is S-wave suppressed.

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