SUSY dark matter and the LHC

TL;DR

This paper discusses supersymmetry as an extension of the Standard Model, highlighting its potential to explain dark matter through various candidates and emphasizing the significance of LHC discoveries for understanding dark matter's nature.

Contribution

It argues that axion cold dark matter fits supersymmetric models better than neutralinos and presents distinctive LHC signatures for Yukawa-unified SUSY GUT theories with mixed dark matter.

Findings

Axion cold dark matter is favored over neutralinos in SUSY models.

Yukawa-unified SUSY GUTs with mixed axion/axino dark matter are highly compelling.

Distinctive signatures for gluino pair production at the LHC are identified.

Abstract

Weak scale supersymmetry is a highly motivated extension of the Standard Model that has a strong degree of support from data. It provides several viable dark matter candidates: the lightest neutralino (a WIMP), the gravitino, and the axion/axino supermultiplet. The LHC turn-on is imminent. The discovery of supersymmetry at the LHC will go a long way towards establishing the nature of dark matter. I present arguments why mainly axion cold dark matter is a better fit for supersymmetric models than neutralinos. I also argue that Yukawa-unified SUSY GUT theories based on SO(10) with mixed axion/axino cold dark matter are extremely compelling, and present distinctive signatures for gluino pair production at the LHC.