Neutrino - induced Electroweak Symmetry Breaking in Supersymmetric SO ( 10 ) Unification
نویسنده
چکیده
The radiative electroweak symmetry breaking, the unification of third-generation Yukawa couplings, and flavor-changing rare decay are investigated in two types of supersymmetric SO(10) scenarios taking into account of the effects of neutrino physics, i.e. the observed large generation mixing and tiny mass scale. The first scenario is minimal, including right-handed neutrinos at intermediate scale with the unification of third-generation Yukawa couplings. Another is the case that the large mixing of atmospheric neutrinos originates from the charged-lepton sector. Under the SO(10)-motivated boundary conditions for supersymmetry-breaking parameters, typical low-energy particle spectrum is discussed and the parameter space is identified which satisfies the conditions for successful radiative electroweak symmetry breaking and the experimental mass bounds of superparticles. In particular, the predictions of the bottom quark mass and the b → sγ branching ratio are fully analyzed. In both two scenarios, new types of radiative electroweak symmetry breaking are achieved with the effects of neutrino couplings. The Yukawa unification becomes compatible with the bottom quark mass and the experimental constraints from flavor-violating rare processes, and the hierarchical superparticle mass spectrum is obtained.
منابع مشابه
LPT–Orsay–16–12, UMN–TH–3515/16, FTPI–MINN–16/05 Vacuum Stability and Radiative Electroweak Symmetry Breaking in an SO(10) Dark Matter Model
Vacuum stability in the Standard Model is problematic as the Higgs quartic self-coupling runs negative at a renormalization scale of about 10 GeV. We consider a non-supersymmetric SO(10) grand unification model for which gauge coupling unification is made possible through an intermediate scale gauge group, Gint = SU(3)C ⊗SU(2)L⊗SU(2)R⊗U(1)B−L. Gint is broken by the vacuum expectation value of a...
متن کاملElectroweak Symmetry Breaking in Supersymmetric Gauge-Higgs Unification Models
We examine the Higgs mass parameters and electroweak symmetry breaking in supersymmetric orbifold field theories in which the 4-dimensional Higgs fields originate from higher-dimensional gauge supermultiplets. It is noted that such gauge-Higgs unification leads to a specific boundary condition on the Higgs mass parameters at the compactification scale, which is independent of the details of sup...
متن کاملMirage unification at TeV scale and natural electroweak symmetry breaking in minimal supersymmetry
We propose a new minimal supersymmetric scenario with virtually no fine-tuning in the electroweak symmetry breaking. It favors light supersymmetric spectrum below a few TeV and predicts definite relations among stop and gaugino masses and LSP higgsino with μ . 200 GeV, which are within the reach of coming LHC experiment 1.
متن کاملElectroweak Symmetry Breaking and Bottom-Top Yukawa Unification
The condition of unification of gauge couplings in the minimal supersymmetric standard model provides successful predictions for the weak mixing angle as a function of the strong gauge coupling and the supersymmetric threshold scale. In addition, in some scenarios, e.g. in the minimal SO(10) model, the tau lepton and the bottom and top quark Yukawa couplings unify at the grand unification scale...
متن کاملFurther thoughts on supersymmetric E8 as a family and grand unification theory
We continue the analysis of the possibility of supersymmetric E8 as a family unification and grand unification theory, this time under the assumptions that there is a vacuum gluino condensate, but that this condensate is not accompanied by dynamical generation of a mass gap in the pure E8 gauge theory. Arguments supporting these assumptions are given. When the E8 theory is coupled to supergravi...
متن کامل