摘要
In this study,we analyze the rare decays of the neutral vector mesons J/ψ and Υ(nS)in the scenario of the minimal R-symmetric supersymmetric standard model using the effective Lagrangian method.The predicted branching ratios are dominated by the mass insertion parameters δ^(ij),i.e.,the off-diagonal inputs,and the contributions of different parts are comparable.Taking into account the experimental constraints on the mass insertion parameters,the predicted branching ratios for the most promising processes Υ(nS)→lτ are ten orders of magnitude smaller than the present experimental bounds.
作者
孙科盛
张文慧
陈建宾
张海斌
闫其庚
Ke-Sheng Sun;Wen-Hui Zhang;Jian-Bin Chen;Hai-Bin Zhang;Qi-geng Yan(Department of Physics,Baoding University,Baoding 071000,China;Department of Physics,Hebei University,Baoding 071002,China;Key Laboratory of High-Precision Computation and Application of Quantum Field Theory of Hebei Province,Baoding 071002,China;Research Center for Computational Physics of Hebei Province,Baoding 071002,China;College of Physics and Optoelectronic Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
基金
Supported by the Natural Science Foundation of Hebei Province(A2022104001,A2022201017)
the Shanxi Scholarship Council of China(2021-31)
the youth top-notch talent support program of the Hebei Province
the Foundation of Baoding University(2018Z01)