CMSSM With Generalized Yukawa Quasi-Unification: An Update
  We analyze the parametric space of the constrained minimal supersymmetric
standard model (CMSSM) with mu>0 supplemented by a generalized asymptotic
Yukawa coupling quasi-unification condition which yields acceptable masses for
the fermions of the third family. We impose constraints from the cold dark
matter abundance in the universe and its direct detection experiments, the
B-physics, as well as the masses of the sparticles and the lightest neutral
CP-even Higgs boson, m_h. We identify two distinct allowed regions with
M_{1/2}>m_0 and m_0>>M_{1/2} classified in the hyperbolic branch of the
radiative electroweak symmetry breaking. In the first region we obtain,
approximately, 44<=tan beta<=52, -3<=A_0/M_{1/2}<=0.1, 122<=m_h/GeV<=127, and
mass of the lightest sparticle in the range (0.75-1.43) TeV. Such heavy
lightest sparticle masses can become consistent with the cold dark matter
requirement on the lightest sparticle relic density thanks to neutralino-stau
coannihilations. In the latter region, fixing m_h to its central value from the
LHC, we find a wider allowed parameter space with milder
electroweak-symmetry-breaking fine-tuning, 40<=tanbeta<=50,
-11<=A_0/M_{1/2}<=15 and mass of the lightest sparticle in the range (0.09-1.1)
TeV. This sparticle is possibly detectable by the present cold dark matter
direct search experiments.
