Neutrino-induced Electroweak Symmetry Breaking in Supersymmetric SO(10) Unification
arXiv:hep-ph/0604096 · doi:10.1088/1126-6708/2006/07/032
Abstract
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 \to s gamma 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.
59 pages
References in corpus (9)
- Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
- Global analysis of three-flavor neutrino masses and mixings
- Solar Neutrinos Before and After Neutrino 2004
- Update of the solar neutrino oscillation analysis with the 766 Ty KamLAND spectrum
- Minimal Supergravity with m_0^2 < 0
- An SO(10) GUT Model With Lopsided Mass Matrix and Neutrino Mixing Angle theta_13
- Neutrino Masses and Mixing, Quark-lepton Symmetry and Strong Right-handed Neutrino Hierarchy
- Minimal archi-texture for neutrino mass matrices
- Asymmetry and Minimality of Quark Mass Matrices