Anomalous quartic $ZZ\gamma \gamma$ couplings at the CLIC

Abstract

We study the sensitivity to anomalous quartic $ZZ\gamma \gamma$ couplings through the processes $e^{+}{e}^{-}\to ZZ\gamma$, $e^{+}{e}^{-}\to e^{+}{\gamma }^{\ast }{e}^{-}\to e^{+}ZZ{e}^{-}$ and $e^{+}{e}^{-}\to e^{+}{\gamma }^{\ast }{\gamma }^{\ast }{e}^{-}\to e^{+}ZZ{e}^{-}$ at the CLIC. We find $95\%$ confidence level bounds on these coupling parameters defining by the dimension-six operators. The best bounds on the anomalous $ZZ\gamma \gamma$ couplings among the three processes are obtained from $e^{+}{e}^{-}\to ZZ\gamma$ at a center of mass energy of $3$ TeV and an integrated luminosity of $590$ fb${}^{-1}$. We show that the best bounds obtained on both the anomalous coupling parameters are of the order of $10^{-8}$ GeV${}^{-2}$, significantly improving the current bounds.

18 pages, 8 figures, 7 table

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Cited by in corpus (20)

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