LHC and dark matter implications of t−b−τ Yukawa unification in split SUSY GUTs

Creative Commons License

Hussain M., Khalid R., Ün C. S.

PHYSICAL REVIEW D - PARTICLES, FIELDS, GRAVITATION AND COSMOLOGY, vol.113, pp.15044-15055, 2026 (SCI-Expanded, Scopus)

Abstract

We investigate a grand unification inspired version of the minimal supersymmetric standard model

(MSSM) based on a left-right symmetric 4-2-2 gauge group, incorporating Yukawa coupling unification

and current phenomenological constraints. Utilizing a split soft supersymmetry-breaking parameter space

motivated by flavor symmetries, we analyze the implications of recent results from ATLAS, CMS, LHCb,

and dark matter direct detection experiments. Our numerical scans, conducted with SARAH and SPheno,

identify viable low-energy regions consistent with third-generation Yukawa unification, the observed Higgs

boson mass, dark matter relic density, and flavor observables such as B → Xsγ, Bs → μþμ− and Bu → τντ.

Our findings suggest that while current bounds severely constrain much of the MSSM-like parameter

space, substantial regions remain experimentally viable and testable in the ongoing LHC run and

next-generation dark matter experiments.