Determining Reheating Temperature at Colliders with Axino or Gravitino Dark Matter

Abstract

After a period of inflationary expansion, the Universe reheated and reached full thermal equilibrium at the reheating temperature T_R. In this work we point out that, in the context of effective low-energy supersymmetric models, LHC measurements may allow one to determine T_R as a function of the mass of the dark matter particle assumed to be either an axino or a gravitino. An upper bound on their mass may also be derived.

19 pages, some improvements, JHEP version

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• Thermal production of gravitinos
• Primordial Lithium Abundance in Catalyzed Big Bang Nucleosynthesis
• Inflationary Cosmology Connecting Dark Energy and Dark Matter
• Anticipating a New Golden Age
• Colliders as a simultaneous probe of supersymmetric dark matter and Terascale cosmology
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Cited by in corpus (7)

• Dark Matter Candidates - Axions, Neutralinos, Gravitinos, and Axinos
• Axinos as Dark Matter Particles
• The number density of a charged relic
• Mainly axion cold dark matter in the minimal supergravity model
• Quintessential Kination and Thermal Production of Gravitinos and Axinos
• Probing the Reheating Temperature at Colliders and with Primordial Nucleosynthesis
• Upper Limits on the Peccei-Quinn Scale and on the Reheating Temperature in Axino Dark Matter Scenarios