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arXiv · 1604.06677

On polarization parameters of spin-$1$ particles and anomalous couplings in $e^+e^-\to ZZ/Zγ$

Rafiqul Rahaman·Ritesh K. Singh
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Abstract

We study the anomalous trilinear gauge couplings of $Z$ and $γ$ using a complete set of polarization asymmetries for the $Z$ boson in $e^+e^-\to ZZ/Zγ$ processes with unpolarized initial beams. We use these polarization asymmetries, along with the cross section, to obtain a simultaneous limit on all the anomalous couplings using the Markov-Chain--Monte-Carlo (MCMC) method. For an $e^+e^-$ collider running at $500$ GeV center-of-mass energy and $100$ fb$^{-1}$ of integrated luminosity the simultaneous limits on the anomalous couplings are $1\sim3\times 10^{-3}$.

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Rafiqul Rahaman, Ritesh K. Singh. 2019-04-27. On polarization parameters of spin-$1$ particles and anomalous couplings in $e^+e^-\to ZZ/Zγ$. https://doi.org/10.1140/epjc%2Fs10052-016-4374-4

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