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- W2020893454 abstract "Based on the R-parity violation option of the minimal supersymmetric standard model, we examine the scenario where the massive gravitino, a relic from the hot big-bang, is the lightest supersymmetric particle and can decay through one or several of the trilinear R-parity violating interactions. We calculate the rates of the gravitino decay via the various three-body decay channels with final states involving three quarks and/or leptons. By taking into account the present constraints on the trilinear R-parity violating coupling constants and assuming the gravitino and scalar superpartner masses do not exceed $ensuremath{sim}80mathrm{TeV},$ it turns out that the gravitinos could easily have decayed before the present epoch but not earlier than the big-bang nucleosynthesis one. Therefore, the considered scenario would upset the standard big-bang nucleosynthesis scenario and we conclude that it does not seem to constitute a natural solution for the cosmological gravitino problem." @default.
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- W2020893454 date "2001-12-26" @default.
- W2020893454 modified "2023-09-25" @default.
- W2020893454 title "<i>R</i>-parity violation and the cosmological gravitino problem" @default.
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- W2020893454 doi "https://doi.org/10.1103/physrevd.65.024033" @default.
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