Gravitinos from Gravitational Collapse
J. A. Grifols, E. Masso, R. Toldra
Abstract
We reanalyse the limits on the gravitino mass m3/2 in superlight gravitino scenarios derived from arguments on energy-loss during gravitational collapse. We conclude that the mass range 10-6eV≤ m3/2≤2.3×10-5eV is excluded by SN1987A data. In terms of the scale of supersymmetry breaking Λ, the range 70GeV≤Λ≤ 300GeV is not allowed.
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