Constrained Minimal Supersymmetric Standard Model with Generalized Yukawa Quasi-Unification

Abstract

We analyze the constrained minimal supersymmetric standard model with mu>0 supplemented by a generalized `asymptotic' Yukawa coupling quasi-unification condition, which allows an acceptable b-quark mass. We impose constraints from the cold dark matter abundance in the universe, B physics, and the mass of the lightest neutral CP-even Higgs boson. We find that, in contrast to previous results obtained for a more restrictive Yukawa quasi-unification condition, the lightest neutralino can act as a cold dark matter candidate in a relatively wide parameter range. In this range, the lightest neutralino relic abundance is drastically reduced mainly by stau-antistau coannihilations and, thus, the upper bound on this abundance from cold dark matter considerations becomes compatible with the recent data on the branching ratio of B_s --> mu^+mu^-. Also, masses for the lightest neutral CP-even Higgs boson about (125-126) GeV, favored by LHC, can be easily accommodated. The mass of the lightest neutralino, though, comes out large (~1 TeV).

12 pages including 6 figures, Revtex; Comments, references and acknowledgments added

References in corpus (17)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• SuperIso v3.0: A program for calculating flavor physics observables in 2HDM and supersymmetry
• First evidence for the decay Bs -> mu+ mu-
• Indirect search for dark matter with micrOMEGAs2.4
• Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron
• Hints of large tan(beta) in flavour physics
• Strong constraints on the rare decays Bs -> mu+ mu- and B0 -> mu+ mu-
• Flavour physics at large tan(beta) with a Bino-like LSP
• Yukawa Unification and Neutralino Dark Matter in SU(4)_c \times SU(2)_L \times SU(2)_R
• Top Quark Mass Measurement in the Lepton + Jets Channel Using a Matrix Element Method and in situ Jet Energy Calibration
• SO(10) SUSY GUTs, the gravitino problem, non-thermal leptogenesis and axino dark matter
• New smooth hybrid inflation
• Semi-shifted hybrid inflation with B-L cosmic strings
• Standard-smooth hybrid inflation
• Brief review of the searches for the rare decays $B_s^0\to {\mu }^{+}{\mu }^{-}$ and $B^0\to {\mu }^{+}{\mu }^{-}$

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• Sparticle Spectroscopy from SO(10) GUT with a Unified Higgs Sector
• Inflation, Leptogenesis, and Yukawa Quasi-Unification within a Supersymmetric Left-Right Model
• Cold Dark Matter and Higgs Mass in the Constrained Minimal Supersymmetric Standard Model with Generalized Yukawa Quasi-Unification
• Comparatively Light Extra Higgs States as Signature of SUSY $\mathrm{SO}(10)$ GUTs with 3rd Family Yukawa Unification
• Probing the hyperbolic branch/focus point region of the constrained minimal supersymmetric standard model with generalized Yukawa quasi-unification