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arXiv 1602.00211hep-ph
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新规范玻色子Z'和轻子味违反衰变及矢量介子的产生

New gauge boson Z' and lepton flavor violating decays and production of vector mesons

Chong-Xing Yue, Jia-Rui Zhou

摘要:

考虑到新规范玻色子$Z'$与普通轻子之间的味违反耦合受到实验上限的限制,我们在几种$\ell\rightarrow 3\ell'$模型下,用$V\in\{ϕ,J/Ψ,Ψ(2S),Υ^{(n)}\}$和$τ\toμ(e)ϕ$计算了$Z'$对LFV衰变$V\rightarrow\ell_{i}\ell_{j}$的贡献.我们发现,本文考虑的所有$Z'$模型可以产生显着的贡献,这些衰变过程,使分支比$Br(τ\to eϕ)$的值超过其实验上限。$τ\to eϕ$的实验上限比稀有衰变过程$τ\to3e$对这些$Z'$模型的约束更严格。

英文摘要:

Considering the constraints on the lepton flavor violating (LFV) couplings of the new gauge boson $Z'$ to ordinary leptons from the experimental upper limit for the LFV process $\ell\rightarrow 3\ell'$, we calculate the contributions of $Z'$ to the LFV decays $V\rightarrow\ell_{i}\ell_{j}$ with $V\in\{ϕ,J/Ψ,Ψ(2S),Υ^{(n)}\}$ and $τ\toμ(e)ϕ$ in the context of several $Z'$ models. We find that all $Z'$ models considered in this paper can produce significant contributions to these decay processes and make the value of the branching ratio $Br(τ\to eϕ)$ above its experimental upper limit. The experimental upper limit of $τ\to eϕ$ can give more severe constraints on these $Z'$ models than those given by the rare decay process $τ\to3e$.

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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