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arXiv 1308.2129hep-ph
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具有U(3)族对称性夸克和轻子反常自由集的Yukawaon模型

Yukawaon Model with Anomaly Free Set of Quarks and Leptons in a U(3) Family Symmetry

Yoshio Koide, Hiroyuki Nishiura

摘要:

在所谓的“yukawaon”模型中,(有效)Yukawa耦合常数$Y_f^{eff}$由标量$Y_f$(yukawaons)与$3\times 3$分量的真空期望值(VEV)给出。到目前为止,Yukawaons $Y_f$被指定为U(3)族对称性的${\bf 6}$或${\bf 6}^*$,因此夸克和轻子在U(3)中不是无反常的。本文将Yukawaons归属于U(3)的${\bf 8}+{\bf 1}$,使夸克和轻子无反常.由于Yukawaons之间的VEV关系也发生了很大变化,因此更新了模型的参数拟合。在用观测到的质量比固定了自由参数之后,夸克和轻子混合分别只剩下两个和一个自由参数。我们成功地预测了夸克和轻子混合参数,包括$CP$破坏的幅度。还预测了马约拉纳中微子的有效质量。

英文摘要:

In the so-called "yukawaon" model, the (effective) Yukawa coupling constants $Y_f^{eff}$ are given by vacuum expectation values (VEVs) of scalars $Y_f$ (yukawaons) with $3\times 3$ components. So far, yukawaons $Y_f$ have been assigned to ${\bf 6}$ or ${\bf 6}^*$ of U(3) family symmetry, so that quarks and leptons were not anomaly free in U(3). In this paper, yukawaons are assigned to ${\bf 8}+{\bf 1}$ of U(3), so that quarks and leptons are anomaly free. Since VEV relations among yukawaons are also considerably changed, parameter fitting of the model is renewed. After fixing our free parameters by observed mass ratios, we have only two and one remaining free parameters for quark and lepton mixings, respectively. We obtain successful predictions for the quark and lepton mixing parameters including magnitudes of $CP$ violation. The effective Majorana neutrino mass is also predicted.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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