Thermal Production of Gravitinos

Abstract

We evaluate the gravitino production rate in supersymmetric QCD at high temperature to leading order in the gauge coupling. The result, which is obtained by using the resummed gluon propagator, depends logarithmically on the gluon plasma mass. As a byproduct, a new result for the axion production rate in a QED plasma is obtained. The implicatons for the cosmological dark matter problem are briefly discussed, in particular the intriguing possibility that gravitinos are the dominant part of cold dark matter.

32 pages, erratum added

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• Gravitino dark matter in the constrained next-to-minimal supersymmetric standard model with neutralino next-to-lightest superpartner
• Structure Formation Limits on Axion-Like Dark Matter
• Nucleosynthesis and CMB bounds on photophilic ALPs: a fresh look
• Direct neutralino searches in the NMSSM with gravitino LSP in the degenerate scenario
• Particle physics and cosmology with high-scale SUSY breaking in five-dimensional supergravity models
• Beyond thermal approximations: Precise cosmological bounds on Axion-Like Particles
• Chiral spin-3/2 particles in a medium
• A viable supersymmetric model with UV insensitive anomaly mediation
• Interactions of exotic neutralino dark matter with nucleons in $U(1)$ extensions of the MSSM originating from $E_6$ GUTs
• Associated production of a photon with dark matter pair at the ILC within the Littlest Higgs model with T-parity
• Parametric Coincidence in the Baryon to Dark Matter Ratio from Affleck-Dine Baryogenesis and UV Freeze-in Dark Matter
• Reheating and Dark Matter Production