中微子代间的分立对称性与相加轻子数守恒的关系  

Relations between a Discrete Symmetty among Neutrino Generations and Conserved Additive Leptpn Numbers

作　　者：缪炎刚[1] 辛明德[1] 

机构地区：[1]兰州大学物理系,兰州730000

出　　处：《兰州大学学报（自然科学版）》1991年第2期38-42,共5页Journal of Lanzhou University(Natural Sciences)

摘　　要：本文假定了中微子具有Majorana质量,并把分立对称性——正四面体群T引入3代轻子的SU(2)_L×U(1)_(B-L)模型中。在此框架下,各种可能的相加轻子数可以统一在3代中微子间的分立对称性T之下,相应的中微子质量矩阵由引入的Higgs场的真空破缺所确定。文中也给出了3代中微子质量间的质量关系:m_(v_τ)=m_(v_μ)+m_(v_e)。Assuming that neutrinos have Majorana masses and imposing the discretesymmetry——tetrahedral group T upon the three-lepton SU(2)L×U(1)B-Lmodel, we find that various conserved additive lepton numbers can beunified by the discrete symmetry T, and that the corresponding neutrinomass matrices are given by the vaccum breaking of Higgs fields introduced.The mass relation among three generations of neutrinos is: mv_τ= mv_μ+ mv_e.

关 键 词：中微子 对称性 轻子数 质量 

分 类 号：O572.321[理学—粒子物理与原子核物理]