Physics
Scientific paper
Dec 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988zphyc..40..591k&link_type=abstract
Zeitschrift für Physik C Particles and Fields, Volume 40, Issue 4, pp.591-598
Physics
1
Scientific paper
We discuss the effect of the lightest supersymmetric particle (LSP), a Higgsino, and of the gravitino of the SU(N,1) minimal SUGRA model in the standard big bang theory. The freeze out of the LSP depends on the gravitino mass and on the top mass and leads to restrictive lower bounds for these parameters in the model. The decay of a gravitino with mass in the few TeV range leads to a delay in the cooling of the universe before nucleosynthesis. This constitutes the main bound on the gravitino mass of the model. The results are compared with the more standard “simultaneous decay approximation”.
Klemm Albrecht O.
Schmidt Michael G.
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