Cosmological gravitino regeneration and decay

Details Cosmological gravitino regeneration and decay Cosmological gravitino regeneration and decay

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phlb..145..181e&link_type=abstract

Physics Letters B, Volume 145, Issue 3-4, p. 181-186.

Physics

519

Scientific paper

We present a detailed study of gravitino production and decay subsequent to cosmological inflation. We calculate the cross sections for gravitino production in collisions of particles in the supersymmetric standard model, and use them to calculate the regenerated abundance of gravitinos as a function of the maximum reheating temperature Tmax. An upper limit on the gravitino mass density during cosmological nucleosynthesis requires Tmax <0.90 × 1016 GeV and considerations of the entropy released when gravitinos decay require Tmax <2.2 × 1013 GeV, while more careful analyses of their decay products' disruptive effects on light nuclei and on the microwave background radiation suggest Tmax < 109 - 1010 GeV.

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