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

Abstract

We study the anomalous trilinear gauge couplings of $Z$ and $\gamma$ using a complete set of polarization asymmetries for the $Z$ boson in $e^{+}{e}^{-}\to ZZ/Z\gamma$ 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 $1\sim 3\times 10^{-3}$.

35+1 pages, 15 figures, 10 tables; v2: some changes in abstract, introduction and discussions, version accepted for publication in EPJC

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• On the choice of beam polarization in $e^{+}{e}^{-}\to ZZ/Z\gamma$ and anomalous triple gauge-boson couplings
• The Z boson spin observables as messengers of new physics
• Probing anomalous $ZZ\gamma$ and $Z\gamma \gamma$ Couplings at the $e^{+}{e}^{-}$ Colliders using Optimal Observable Technique
• Constraining CP violating operators in charged and neutral triple gauge couplings
• Unravelling the anomalous gauge boson couplings in $Z{W}^{\pm }$ production at the LHC and the role of spin-$1$ polarizations
• Optimal estimation of Dimension-8 Neutral Triple Gauge Couplings at $e^{+}{e}^{-}$ Colliders
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• Study of anomalous gauge-Higgs couplings using $Z$ boson polarization at LHC
• Probing the anomalous triple gauge boson couplings in $e^{+}{e}^{-}\to W^{+}{W}^{-}$ using $W$ polarizations with polarized beams
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• Exploring dark $Z_d$-boson in future Large Hadron-electron collider
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• Search for Neutral Triple Gauge Couplings with $ZZ$ Production at Future Electron Positron Colliders
• Search for the anomalous $ZZZ$ and $ZZ\gamma$ gauge couplings through the process $e^{+}{e}^{-}\to ZZ$ with unpolarized and polarized beams
• Probing top quark anomalous moments in $W$ boson associated single top quark production at the LHC using polarization and spin correlation
• Vector currents of integer-spin Majorana particles
• The cross-section for the $\gamma e^{-}\to Z{e}^{-}\to l^{-}{l}^{+}{e}^{-}$ scattering at the LHeC
• Use of $Z$ polarization in $e^{+}{e}^{-}\to ZH$ to measure the triple-Higgs coupling
• The $\gamma b\overline{b}$ production via ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions at the ILC and LHC
• Probing Neutral Triple Gauge Couplings via $ZZ$ Production at $e^{+}{e}^{-}$ Colliders with Machine Learning
• Probing Neutral Triple Gauge Couplings at e- p colliders