Gravitino Dark Matter with Sneutrino NLSP in NUHM

TL;DR

This paper explores the possibility of gravitino as dark matter with a sneutrino as the NLSP within the NUHM model, demonstrating its theoretical viability and potential phenomenological implications.

Contribution

It introduces a scenario where sneutrino is the NLSP in NUHM, expanding the range of viable dark matter models involving gravitinos.

Findings

Sneutrino can naturally serve as the NLSP in NUHM.

The gravitino dark matter scenario with sneutrino NLSP remains phenomenologically viable.

This expands the landscape of supersymmetric dark matter models.

Abstract

The identity of dark matter has not been solved up to this date, a problem that became the main topic of this conference. There are many theoretical candidates for dark matter particle, including gravitino from supergravity models. For gravitino dark matter scenario, the phenomenology depends much on what the next lightest supersymmetric particle (NLSP) is. We show here that sneutrino can naturally be the NLSP in the Non-Universal Higgs Masses (NUHM) model, and that this scenario is still phenomenologically viable.