Gravitino dark matter and the lithium primordial abundance within a pre-BBN modified expansion

Understand

We present supersymmetric scenarios with gravitino LSP and stau NLSP in the case of a non-standard model of cosmology with the addition of a dark component in the pre-BBN era.

• In the context of the standard model of cosmology, gravitino LSP has drawn quite some attention as it is a good candidate for dark matter.
• It is produced in scattering processes during reheating after inflation and from the decay of the stau.
• With a long lifetime, the stau decays during Big Bang Nucleosynthesis.