Search for anomalous quartic $WWZ\gamma$ couplings at the future linear $e^{+}e^{-}$ collider

TL;DR

This study investigates the potential to detect anomalous quartic WWZγ gauge couplings at future linear colliders by analyzing specific processes at different energies, setting limits on new physics parameters in a model-independent manner.

Contribution

It provides the first detailed analysis of anomalous quartic WWZγ couplings at the CLIC, deriving sensitivity limits using effective Lagrangian approach across multiple energies.

Findings

Set 95% CL limits on anomalous couplings at 3 TeV CLIC.

Achieved sensitivity to coupling parameters at the order of 10^{-8} to 10^{-7} GeV^{-2}.

Demonstrated the potential of future colliders to probe new physics in gauge boson interactions.

Abstract

In this paper, the potentials of two different processes $e^{+}e^{-}\rightarrow W^{-} W^{+}\gamma$ and $e^{+}e^{-} \rightarrow e^{+}\gamma^{*} e^{-} \rightarrow e^{+} W^{-} Z \nu_{e}$ at the Compact Linear Collider (CLIC) are examined to probe the anomalous quartic $WWZ\gamma$ gauge couplings. For $\sqrt{s}=0.5, 1.5$ and 3 TeV energies at the CLIC, $95\%$ confidence level limits on the anomalous coupling parameters defining the dimension-six operators are found via the effective Lagrangian approach in a model independent way. The best limits on the anomalous couplings $\frac{k_{0}^{W}}{\Lambda^{2}}$, $\frac{k_{c}^{W}}{\Lambda^{2}}$, $\frac{k_{2}^{m}}{\Lambda^{2}}$ and $\frac{a_{n}}{\Lambda^{2}}$ which can be achieved with the integrated luminosity of $L_{int}=590$ fb$^{-1}$ at the CLIC with $\sqrt{s}=3$ TeV are $[-8.80;\, 8.73]\times 10^{-8}$ GeV$^{-2}$, $[-1.53; \, 1.51]\times 10^{-7}$ GeV$^{-2}$, $[-3.75; \, 3.74]\times 10^{-7}$ GeV$^{-2}$ and $[-9.13;\,9.09]\times 10^{-7}$ GeV$^{-2}$, respectively.