On SUSY GUTs with a degenerate Higgs mass matrix

TL;DR

This paper investigates supersymmetric grand unified models with a degenerate Higgs mass matrix at the GUT scale, analyzing their low-energy phenomenology and compatibility with experimental data using MCMC methods.

Contribution

It introduces models with a degenerate Higgs mass matrix at the GUT scale and explores their phenomenological implications and experimental viability.

Findings

Identifies parameter regions consistent with current experimental constraints.

Shows that degenerate Higgs mass matrices can lead to distinctive low-energy signatures.

Provides a comprehensive MCMC analysis of the model's parameter space.

Abstract

Certain supersymmetric grand unified models predict that the coefficients of the quadratic terms in the MSSM Higgs potential should be degenerate at the GUT scale. We discuss some examples for such models, and we analyse the implications of this peculiar condition of a GUT-scale degenerate Higgs mass matrix for low-scale MSSM phenomenology. To this end we explore the parameter space which is consistent with existing experimental constraints by means of a Markov Chain Monte Carlo analysis.