Decaying neutralinos as dark matter candidates

Details Decaying neutralinos as dark matter candidates Decaying neutralinos as dark matter candidates

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phlb..205..559b&link_type=abstract

Physics Letters B, Volume 205, Issue 4, p. 559-563.

Physics

15

Scientific paper

Motivated by supersymmetric theories, we consider the possibility that weakly interacting massive particles, χ, perhaps making the dark matter of the universe, are long lived, but not completely stable (τχ>H0-1). In condition of relatively low density, and depending on the actual value of τχ, χ-decays may give better signals than χ-annihilations. Under reasonable assumption, from the study of isotropic γ-rays, cosmic rays and diffuse X-rays, we can set a lower bound on the χ-lifetime, τχ>~1025-1026 s. In fact, if the actual value of τχ is close to this bound, several expected different signals can approach, or even saturate, the level of present observations.

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