The Phenomenology of Gravitino Dark Matter Scenarios in Supergravity Models

TL;DR

This paper reviews the phenomenology of gravitino dark matter in supergravity models, focusing on different NLSP scenarios and their constraints, highlighting the stability and detection prospects of gravitino as dark matter.

Contribution

It provides a comprehensive review of gravitino dark matter phenomenology in supergravity, analyzing various NLSP cases and their experimental constraints.

Findings

Neutralino NLSP scenarios are consistent with current constraints.

Stau NLSP models face specific cosmological bounds.

Sneutrino NLSP scenarios have distinctive collider signatures.

Abstract

We review the phenomenology of gravitino dark matter within supergravity framework. Gravitino can be dark matter if it is the lightest supersymmetric particle, which is stable if R-parity is conserved. There are several distinct scenarios depending on what the next to lightest supersymmetric particle (NLSP) is. We discuss the constraints and summarize the phenomenology of neutralino, stau, stop and sneutrino NLSPs.