论文标题

$ u(1)_x $ ssm型号中的L_j \ righatRow {l_iγ} $违反Lepton风味

Lepton flavor violating decays $l_j\rightarrow{l_iγ}$ in the $U(1)_X$SSM model within the Mass Insertion Approximation

论文作者

Wang, Tong-Tong, Zhao, Shu-Min, Zhang, Jian-Fei, Dong, Xing-Xing, Feng, Tai-Fu

论文摘要

将三个新型希格斯超级场和右中微子添加到MSSM中,以获得$ u(1)_x $ ssm型号。它的本地量规组为$ su(3)_C \ times su(2)_l \ times u(1)_y \ times u(1)_x $。在$ u(1)_x $ ssm的框架中,我们研究MUON异常磁矩和违反Lepton风味的衰减$ L_J \ rightArrow {l_iγ}(j = 2,3; i = 1,2)$在质量插入近似值内(MIA)。通过MIA方法,我们可以找到直接影响Lepton风味衰减分析结果的参数$ L_J \ rightarrow {l_iγ} $,这使我们的工作更加方便。我们希望为形式和相关的有效顶点提供一组简单的分析公式,这对于违反Lepton风味的现象学研究可能非常有用。根据数值结果的准确性,不同敏感参数的影响,我们得出的结论是,与初始Lepton和Final Lepton的世代相对应的非对基因元素是主要的敏感参数,而Lepton风味违规(LFV)来源。这项工作可以提供新物理学(NP)的明确信号。

Three singlet new Higgs superfields and right-handed neutrinos are added to MSSM to obtain $U(1)_X$SSM model. Its local gauge group is $SU(3)_C\times SU(2)_L \times U(1)_Y \times U(1)_X$. In the framework of $U(1)_X$SSM, we study muon anomalous magnetic moment and lepton flavor violating decays $l_j\rightarrow{l_iγ}(j=2,3;i=1,2)$ within the Mass Insertion Approximation(MIA). Through the MIA method, we can find the parameters that directly affect the analytical result of the lepton flavor violating decays $l_j\rightarrow{l_iγ}$, which make our work more convenient. We want to provide a set of simple analytic formulas for the form factors and the associated effective vertices, that may be very useful for future phenomenological studies of the lepton flavor violating decays. According to the accuracy of the numerical results which the influence of different sensitive parameters, we come to the conclusion that the non-diagonal elements which correspond to the generations of the initial lepton and final lepton are main sensitive parameters and lepton flavor violation(LFV) sources. This work can provide a clear signal of new physics(NP).

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