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The bound on the mass of the new gauge boson $Z^{\prime}$ from the process $μ\longrightarrow 3e$

Chongxing Yue·Guoli Liu·Jiantao Li
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Abstract

The new gauge boson $Z^{\prime}$ predicted by the strong top dynamical symmetry breaking models has significant contributions to the lepton flavor changing process $μ\longrightarrow 3e $. We consider the bound on the mass of the new gauge boson $Z^{\prime}$ from the experimental value of the branching ratio $Br(μ\longrightarrow 3e)$ in the framework of topcolor assisted technicolor models. We find that the precision experimental value of $Br(μ\longrightarrow 3e)$ gives a severe bound on the $Z^{\prime}$ mass $M_{Z^{\prime}}$. For $k_1 \leq 1$, $M_{Z^{\prime}}$ must be larger than 1.64 $TeV$.

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Chongxing Yue, Guoli Liu, Jiantao Li. 2000-11-10. The bound on the mass of the new gauge boson $Z^{\prime}$ from the process $μ\longrightarrow 3e$. https://doi.org/10.1016/s0370-2693(00)01257-0

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