Big Bang Nucleosynthesis Constraints on Reheating Temperature and Gravitino Mass

Abstract

Byaccounting for the latest developments in BBN research, this review places restrictions on stable and unstable gravitinos ”super-partner of graviton” within the BBN paradigm, and measurements of the abundances of the pri mordial light nuclei. Assuming that the primary mode of creating primor dial gravitinos is thermal production, this review determines the maximum threshold for the reheating temperature with respect to unstable graviti nos mass. As the next-to-lightest supersymmetric particles, bino, stau, and sneutrinos, the following content is determines and get constraints on their properties under the scenario of a stable gravitino. The following areas have improved from prior studies critically analyzed: inclusion of the longitudinal component’s contribution to gravitino production, use of the most recent ob servational data, and the scenario with unstable Long-lasting stau, with the proper solution of the Boltzmann equation for the stau bound-state influence.