Non-universal gaugino masses and implications on the dark matter and Higgs searches

TL;DR

This paper investigates how non-universal gaugino masses in grand unified theories affect dark matter candidates and Higgs boson searches, highlighting specific SU(5) representations consistent with cosmological data and collider prospects.

Contribution

It analyzes the impact of non-universal gaugino masses on neutralino composition, dark matter relic density, and Higgs detection prospects at the LHC within SU(5) models.

Findings

Thermal relic density matches WMAP data for certain SU(5) representations.

Neutralino cascades can produce observable Higgs signals at the LHC.

Connection established between dark matter properties and Higgs search strategies.

Abstract

Non-universal boundary conditions in grand unified theories can lead to non-universal gaugino masses at the unification scale. In R-parity preserving theories the lightest supersymmetric particle is a natural candidate for the dark matter. We have studied the composition of the lightest neutralino in non-universal gaugino mass cases from the SU(5), and implications on the dark matter. In the representations of SU(5) thermal relic density agreeing with WMAP is found. The possibility to observe the neutral MSSM Higgs bosons (h/H/A) at the LHC via neutralino cascades when the lightest neutralino is dark matter, is discussed for the representation 24, and the connection to dark matter is established.