A Grand Unified Supersymmetric Theory of Flavor
A Grand Unified Supersymmetric Theory of Flavor
复制标题
风味大统一超对称理论
DOI：
--
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
L. Hall
中科院分区：
文献类型：
--
作者：
R. Barbieri;L. Hall
总结。-大统一SU(5)理论是通过对U(2)味道对称性的分层破缺而构造的。解决超对称味变化问题所需的夸克和轻子质量矩阵的小参数，以及代际夸克和轻子质量等级都是由U(2)对称破缺参数产生的。该理论的味道相互作用受到严格的约束，费米子和标量扇区都只有10个自由实参数。8个小的费米子质量比中的1个和所有3个小的Cabibbo-Kobayashi-Maskawa混合角都可以在不引入小的无量纲汤川参数的情况下被理解。预测了2个Cabibbo-Kobayashi-Maskawa混合角和2个费米子质量。出现在中性点的六个风味混合矩阵通常是任意酉阵，仅根据单个自由参数来确定。PACS 12.10-统一的领域理论和模型。
Summary. — A grand unified SU( 5 ) theory is constructed with a hierarchical breaking of a U( 2 ) flavor symmetry. The small parameters of the squark and slepton mass matrices, necessary to solve the supersymmetric flavor-changing problem, and the intergenerational quark and lepton mass hierarchies are both generated from the U( 2 ) symmetry breaking parameters. The flavor interactions of the theory are tightly constrained, with just 10 free real parameters for both the fermion and scalar sectors. All but one of the 8 small fermion mass ratios, and all of the 3 small Cabibbo-Kobayashi-Maskawa mixing angles, can be understood without introducing small dimensionless Yukawa parameters. Predictions are made for 2 of the Cabibbo-Kobayashi-Maskawa mixing angles and for 2 of the fermion masses. The six flavor mixing matrices which appear at the neutralino vertices, and which in general are arbitrary unitary matrices, are determined in terms of just a single free parameter. PACS 12.10 ‐ Unified field theories and models.