Decay of gravitinos and photo-destruction of light elements

Details Decay of gravitinos and photo-destruction of light elements Decay of gravitinos and photo-destruction of light elements

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phlb..189...23k&link_type=abstract

Physics Letters B, Volume 189, Issue 1-2, p. 23-28.

Physics

65

Scientific paper

Gravitinos are produced in the reheating phase of the inflationary universe. We consider the destruction of light elements (4he, 3He and D) by the high energy photons produced by the decay of gravitinos. The spectrum of high energy photons, which was roughly treated previously, is obtained more precisely by a numerical integration of the Boltzmann equation and a constraint on the reheating temperature is derived. We conclude that the allowed reheating temperature is as high as 109-1012 GeV for gravitinos with a mass between 100 GeV and 1 TeV and a much higher reheating temperature is allowed for gravitinos with mass greater than 1 TeV. This constraint is weaker than previous work by more than two orders of magnitude in the mass range above ~300 GeV.

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