A simplest seesaw model of the TM1 and μ-τ reflection symmetries for the neutrino masses and leptogenesis

作     者：Zhen-hua Zhao Lei Zhang Yang Gao Zhen-hua Zhao;Lei Zhang;Yang Gao

作者机构：Department of PhysicsLiaoning Normal UniversityDalian 116029China Center for Theoretical and Experimental High Energy PhysicsLiaoning Normal UniversityDalian 116029China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2023年第75卷第6期

页      面：96-102页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：supported in part by the National Natural Science Foundation of China under Grant Nos.11605081,12142507 and 12147214 the Natural Science Foundation of the Liaoning Scientific Committee under Grant No.2022MS-314 

主　　题：neutrino masses neutrino mixing seesaw model flavor symmetry leptogenesis 

摘      要：In this paper,following the Occam’s razor principle,we have put forward a very simple form of the Dirac neutrino mass matrix M_(D) in the minimal seesaw model with the right-handed neutrino mass matrix being diagonal M_(R)=diag(M_(1),M_(2));it has one texture zero and only contains three real parameters,whose values can be determined from the neutrino oscillation experimental *** a model leads to a neutrino mass matrix M_(v)≃-M_(D)M_(R)^(-1)M_(D)^(T)that obeys the TM1 and μ-τ reflection symmetries *** this way all the lepton flavor mixing parameters except for θ_(13) are predicted;the value of θ_(12) is predicted by the TM1 symmetry,while those of θ_(23),δ,ρ and σ by the μ-τ reflection *** the neutrino masses are predicted to be of the NO case with m_(1)=0,for which all three light neutrino masses will be pinned down with the help of the experimental results for the neutrino mass squared *** these results,the effective Majorana neutrino mass∣(M_(ν))_(ee)∣that controls the rate of the neutrinoless double beta decay is predicted to be 1.6 or 3.8 meV in the case of σ=0 or π/*** have also studied the implications of the model for *** turns out that only in the two-flavor leptogenesis regime(which holds in the temperature range 10^(9)-10^(12) GeV)can leptogenesis have a chance to be *** a successful leptogenesis can be achieved at M_(1)≃1.2×10^(11) GeV in the case of σ=π/2,but not in the case of σ=0.