Neutralino-Sbottom Coannihilation in SU(5)

TL;DR

This paper explores a specific supersymmetric model within SU(5) that predicts a sbottom as the next-to-lightest supersymmetric particle, providing viable dark matter scenarios and testable predictions for the LHC.

Contribution

It identifies minimal soft SUSY breaking parameters in SU(5) that produce a sbottom NLSP and viable neutralino dark matter through coannihilation, with testable LHC benchmarks.

Findings

Sbottom mass can be around 210 GeV or higher.

Gluino and first two family squarks are heavier than 1 TeV.

Benchmark points suggest LHC detectability.

Abstract

We identify within the SU(5) framework the minimum number of soft supersymmetry breaking parameters which can yield a bottom squrak (sbottom) as the next to lightest supersymmetric particle. We focus in particular on the neutralino-sbottom coannihilation scenario which gives rise to the desired neutralino dark matter relic density. We find solutions in which the sbottom mass is greater than or of order 210 GeV, while the gluino and the first two family squarks are heavier than 1 TeV. Some benchmark points which can be tested at the LHC are presented.