Determining Reheating Temperature at Colliders with Axino or Gravitino Dark Matter

Choi, Ki-Young; Roszkowski, Leszek; de Austri, Roberto Ruiz

Determining Reheating Temperature at Colliders with Axino or Gravitino Dark Matter

Authors

Choi, Ki-Young

Roszkowski, Leszek

de Austri, Roberto Ruiz

Description

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