Cosmologically benign gravitinos at the weak scale

Details Cosmologically benign gravitinos at the weak scale Cosmologically benign gravitinos at the weak scale

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phlb..224..125f&link_type=abstract

Physics Letters B, Volume 224, Issue 1-2, p. 125-130.

Physics

11

Scientific paper

We show that a gravitino with mass O(mw) and a high reheat temperature after inflation, TR≅1012-1014GeV, c an be compatible with cosmological constraints if the gravitino decays predominantly into neutrino-sneutrino pairs. Models in which the lightest supersymmetric particle is either the sneutrino or the neutralino are described. In this scenario, gravitino decay provides an alternative mechanism for producing supersymmetric dark matter, which may be either hot or cold.

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