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- W1783743328 abstract "We study possible deviations from the standard model in the reaction $gamma erightarrow Ze$ at a 500 GeV $e^+e^-$ collider. As a photon source we use a laser backscattered photon beam. We investigate the most general $gamma Zgamma$ and $gamma ZZ$ vertices including operators up to energy-dimension-six which are Lorentz invariant. These vertices require four extra parameters; two are CP-conserving, $h^gamma_1$ and $h^Z_1$, and two are CP-violating, $h^gamma_2$ and $h^Z_2$. We present analytical expressions of the helicity amplitudes for the process $gamma erightarrow Ze$ for arbitrary values of anomalous couplings. Assuming Standard Model values are actually measured we present the allowed region in the ($h^gamma_1,h^Z_1$) plane at the 90% confidence level. We then show how the angular correlation of the $Z$ decay products can be used to extract detailed information on the anomalous (especially CP-violating) $gamma Zgamma$ and $gamma ZZ$ couplings." @default.
- W1783743328 created "2016-06-24" @default.
- W1783743328 creator A5089963163 @default.
- W1783743328 date "1994-12-15" @default.
- W1783743328 modified "2023-09-27" @default.
- W1783743328 title "Probing the Weak Boson Sector in $gamma erightarrow Ze$" @default.
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