CMSSM with Yukawa Quasi-Unification Revisited
Abstract
The constrained minimal supersymmetric standard model with mu>0 supplemented by an `asymptotic' Yukawa coupling quasi-unification condition, which allows an acceptable b-quark mass, is reinvestigated. Imposing updated constraints from the cold dark matter abundance in the universe, B physics, the muon anomalous magnetic moment, and the mass mh of the lightest neutral CP-even Higgs boson, we find that the allowed parameter space is quite limited but not unnaturally small with the cold dark matter abundance suppressed only via neutralino-stau coannihilations. The lightest neutralino with mass in the range (341-677) GeV is possibly detectable in the future direct cold dark matter searches via its spin-independent cross section with nucleon. In the allowed parameter space of the model, we obtain mh=(117-122.2) GeV.
Keywords
Cite
@article{arxiv.1107.0667,
title = {CMSSM with Yukawa Quasi-Unification Revisited},
author = {N. Karagiannakis and G. Lazarides and C. Pallis},
journal= {arXiv preprint arXiv:1107.0667},
year = {2015}
}