Dark matter from SUGRA GUTs: mSUGRA, NUSUGRA and Yukawa-unified SUGRA

TL;DR

This paper reviews various gravity-mediated SUSY breaking models, focusing on neutralino dark matter in mSUGRA, NUSUGRA, and Yukawa-unified SUGRA, discussing their viability and alternative dark matter candidates like axions.

Contribution

It provides a comparative analysis of dark matter candidates in different SUGRA models, highlighting challenges and solutions in neutralino dark matter realization.

Findings

mSUGRA can produce neutralino dark matter consistent with observations

NUSUGRA models can yield a well-tempered neutralino for dark matter

Yukawa-unified models favor axions and axinos over neutralinos

Abstract

Gravity-mediated SUSY breaking models with R-parity conservation give rise to dark matter in the universe. I review neutralino dark matter in the minimal supergravity model (mSUGRA), models with non-universal soft SUSY breaking terms (NUSUGRA) which yield a well-tempered neutralino, and models with unified Yukawa couplings at the GUT scale (as may occur in an SO(10) SUSY GUT theory). These latter models have difficulty accommodating neutralino dark matter, but work very well if the dark matter particles are axions and axinos.