Superparticle Mass Window from Leptogenesis and Decaying Gravitino Dark Matter

Abstract

Gravitino dark matter, together with thermal leptogenesis, implies an upper bound on the masses of superparticles. In the case of broken R-parity the constraints from primordial nucleosynthesis are naturally satisfied and decaying gravitinos lead to characteristic signatures in high energy cosmic rays. We analyse the implications for supergravity models with universal boundary conditions at the grand unification scale. Together with low-energy observables one obtains a window of superparticle masses, which will soon be probed at the LHC, and a range of allowed reheating temperatures.

14 pages, 3 figures, published version

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Cited by in corpus (14)

• Dark Matter Candidates
• Probing Dark Matter Decay and Annihilation with Fermi LAT Observations of Nearby Galaxy Clusters
• Hunting Dark Matter Gamma-Ray Lines with the Fermi LAT
• Flavor symmetries, leptogenesis and the absolute neutrino mass scale
• Probing Gravitino Dark Matter with PAMELA and Fermi
• Broken R-Parity in the Sky and at the LHC
• Long-lived higgsinos as probes of gravitino dark matter at the LHC
• Antiproton Limits on Decaying Gravitino Dark Matter
• Decaying gravitino dark matter and an upper bound on the gluino mass
• R-parity Violating Right-Handed Neutrino in Gravitino Dark Matter Scenario
• Portal Effective Theories: A framework for the model independent description of light hidden sector interactions
• The long-lived stau as a thermal relic
• Dark matter and neutrino masses in the R-parity violating NMSSM
• Gravitino phenomenology and cosmological implications of supergravity