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CP violating effects in the decay Z -> mu^+mu^-gamma induced by ZZgamma and Zgammagamma couplings

M. A. Perez·F. Ramirez-Zavaleta
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Abstract

We analyze possible CP-violating effects induced in the $Z$ decay with hard photon radiation by $γZZ$ and $γγZ$ anomalous vertices. We estimate the sensibility of future linear collider experiments on these couplings coming from CP-odd asymmetries associated to angular correlations of the three particle final state in $e^+e^- \to Z \to μ^+μ^-γ$. We find that a linear collider with an integrated luminosity of 500 $fb^{-1}$ and $\sqrt{s} = 0.05$ TeV can place the bound $|h_1^{γ,Z}| < 0.92$ at the 90% confidence level for these couplings.

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M. A. Perez, F. Ramirez-Zavaleta. 2005-01-11. CP violating effects in the decay Z -> mu^+mu^-gamma induced by ZZgamma and Zgammagamma couplings. https://doi.org/10.1016/j.physletb.2005.01.039

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