Phenomenological constraints on SUSY SU(5) GUTs with non-universal gaugino masses

TL;DR

This paper explores the phenomenological implications of SUSY SU(5) GUTs with non-universal gaugino masses, analyzing constraints from electroweak symmetry breaking, particle masses, and decay rates, and determining the nature of the lightest supersymmetric particle.

Contribution

It provides a detailed analysis of constraints and mass spectra in SUSY SU(5) GUTs with non-universal gaugino masses, including loop corrections to bottom mass.

Findings

Constraints from electroweak symmetry breaking are identified.

The nature of the lightest supersymmetric particle is determined.

Loop corrections to bottom mass are calculated.

Abstract

We study phenomenological aspects of supersymmetric SU(5) grand unified theories with non-universal gaugino masses. For large tan beta, we investigate constraints from the requirement of successful electroweak symmetry breaking, the positivity of stau mass squared and the b to s gamma decay rate. In the allowed region, the nature of the lightest supersymmetric particle is determined. Examples of mass spectra are given. We also calculate loop corrections to the bottom mass due to superpartners.