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arXiv · 1107.0667

CMSSM with Yukawa Quasi-Unification Revisited

N. Karagiannakis·G. Lazarides·C. Pallis
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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.

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N. Karagiannakis, G. Lazarides, C. Pallis. 2011-07-04. CMSSM with Yukawa Quasi-Unification Revisited. https://doi.org/10.1016/j.physletb.2011.08.058

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