分类: 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间: 2017-09-17
摘要: A natural model of realizing the effective supersymmetry is presented. Two sets of the Standard Model-like gauge group G1×G2 are introduced, where Gi = SU(3)i×SU(2)i ×U(1)i, which breakdiagonally to the Standard Model gauge group at the energy scale M ∼ 107 GeV. Gauge couplings in G1 are assumed much larger than that in G2. Gauge mediated supersymmetry breaking is adopted. The first two generations (third one) are charged only under G1 (G2). The effective supersymmetry spectrum is obtained. How to reproduce realistic Yukawa couplings is studied.Fine-tuning for an 126 GeV Higgs is much reduced by the large A term due to direct Higgs-messenger interaction. Finally, G2 is found to be a non-trivial realization of the strong unificationscenario in which case we can predict #11;s(MZ) without real unification
分类: 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间: 2017-09-17
摘要: In the framework in which supersymmetry is used for understanding fermion masses rather than stabilizing the electroweak scale, we elaborate on the phenomenological analysis for the neutrino physics. A relatively large sin #18;13 ≃ 0.13 is naturally obtained. The model further predicts vanish-ingly small CP violation in neutrino oscillations. While the high scale supersymmetry genericallyresults in a Higgs mass of about 141 GeV, our model reduces this mass to 126 GeV via introducingSU(2)L triplet fields which make the electroweak vacuum metastable (with a safe lifetime) and also contribute to neutrino masses.