B-L model with D_(4)×Z_(4)×Z_(2)symmetry for fermion mass hierarchies and mixings  

作　　者：V.V.Vien 

机构地区：[1]Department of Physics,Tay Nguyen University,Daklak,Vietnam

出　　处：《Chinese Physics C》2024年第6期11-30,共20页中国物理C（英文版）

基　　金：funded by Tay Nguyen University under grant number T2023-45CBTD。

摘　　要：We constructed a gauge B-L model with D_(4)×Z_(4)×Z_(2)symmetry to explain the quark and lepton mass hierarchies and their mixings with realistic CP phases via the type-I seesaw mechanism.Six quark mases,three quark mixing angles,and the CP phase in the quark sector take the central values whereas Yukawa couplings in the quark sector are diluted in a range of difference of three orders of magnitude by the perturbation theory at the first order.Concerning the neutrino sector,a small neutrino mass is achieved by the type-I seesaw mechanism.Both inverted and normal neutrino mass hierarchies are consistent with the experimental data.The predicted sum of neutrino masses for normal and inverted hierarchies,the effective neutrino masses,and the Dirac CP phase are also consistent with recently reported limits.

关 键 词：flavor symmetries quark and lepton masses and mixing extensions of electroweak gauge sector neutrino mass and mixing non-standard-model neutrinos right-handed neutrinos D4 discrete symmetry 

分 类 号：O572.321[理学—粒子物理与原子核物理]