Massive photinos and ultraviolet astronomy

Details Massive photinos and ultraviolet astronomy Massive photinos and ultraviolet astronomy

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phlb..112..211s&link_type=abstract

Physics Letters B, Volume 112, Issue 3, p. 211-212.

Physics

8

Scientific paper

The ionisation of hydrogen and helium in the intergalactic medium and of silicon and carbon in galactic halos, including our own, have already tentatively been attributed to photons emitted by decaying neutrinos created in the hot big bang. This hypothesis would require a neutrino mass ~ 100 eV and a radiative lifetime ~ 1027 s. Here we point out that the same ideas could apply instead to photinos. If the photino mass is determined by the grand unification scale ~ 1015 GeV, then a mass ~ 100 eV would be compatible with experiment and the radiative lifetime of the photino would indeed be expected to be ~ 1027 s.

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