Constraints on Light Dark Matter From Core-Collapse Supernovae

Details Constraints on Light Dark Matter From Core-Collapse Supernovae Constraints on Light Dark Matter From Core-Collapse Supernovae

2006-02-18

arxiv.org/abs/hep-ph/0602169v1

Phys.Rev.Lett.96:211302,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.96.211302

We show that light ($\simeq$ 1 -- 30 MeV) dark matter particles can play a significant role in core-collapse supernovae, if they have relatively large annihilation and scattering cross sections, as compared to neutrinos. We find that if such particles are lighter than $\simeq$ 10 MeV and reproduce the observed dark matter relic density, supernovae would cool on a much longer time scale and would emit neutrinos with significantly smaller energies than in the standard scenario, in disagreement with observations. This constraint may be avoided, however, in certain situations for which the neutrino--dark matter scattering cross sections remain comparatively small.

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