The Z' → τμ decay in the sequential Z model

15th Mexican School of Particles and Fields

Aranda, J.I.^1 ; Montaño, J.^2 ; Ramírez-Zavaleta, F.^1 ; Toscano, J.J.^3 ; Tututi, E.S.^1

Facultad de Ciencias Físico Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Avenida Francisco J. Mújica S/N, Michoacán, 58060, Morelia, Mexico^1

Departamento de Física, CINVESTAV, Apartado Postal 14-740, México, D. F. 07000, Mexico^2

Facultad de Ciencias Físico Matemáticas, Benemérita Universidad Autónoma de Puebla, Apartado Postal 1152, Puebla, Puebla, Mexico^3

关键词: Branching ratio;    Lagrangian;    Lepton flavor violation;    Lepton-flavor;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/468/1/012001/pdf
DOI  :  10.1088/1742-6596/468/1/012001

来源: IOP

【 摘 要 】

A calculation of the strength of the lepton flavor violating Z'μτ coupling is presented by using the most general renormalizable Lagrangian that includes lepton flavor violation. We employ the experimental restriction over the τ → μμ+μ-decay in the context of the sequential Z model to bound the mentioned coupling. It was found that the most restrictive result is provided by a vector-like coupling, denoted as |Ωμτ|2, finding around 10-2for a Z' boson mass of 2 TeV. We used this information to estimate the branching ratio for the Z' → τμ decay. According to the analyzed model the associated branching ratio is of the order of 10-2for a Z' boson mass around 2 TeV.