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Article Dans Une Revue Physical Review Letters Année : 2017

Case for an EeV Gravitino

Résumé

We consider the possibility that supersymmetry is broken above the inflationary mass scale and that the only “low” energy remnant of supersymmetry is the gravitino with a mass of the order of the EeV scale. The gravitino in this class of models becomes a candidate for the dark matter of the Universe. To avoid the overproduction of gravitinos from the decays of the next-to-lightest supersymmetric particle we argue that the supersymmetric spectrum must lie above the inflationary mass scale (MSUSY>10-5MP∼1013  GeV). Since m3/2≃MSUSY2/MP, we expect m3/2≳0.2  EeV. Cosmological constraints then predict a relatively large reheating temperature between 1010 and 1012  GeV.
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Dates et versions

hal-01645626 , version 1 (26-02-2024)

Identifiants

Citer

Emilian Dudas, Yann Mambrini, Keith Olive. Case for an EeV Gravitino. Physical Review Letters, 2017, 119 (5), pp.051801. ⟨10.1103/PhysRevLett.119.051801⟩. ⟨hal-01645626⟩
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