Study on the sensitivity of the Higgs boson couplings in photon-photon collision at CLIC and muon collider

TL;DR

This study investigates the potential of photon-photon collisions at future colliders to constrain Higgs-gauge boson couplings, providing model-independent limits on anomalous interactions using effective field theory.

Contribution

It introduces a novel analysis of Higgs-gauge boson couplings via photon-induced processes at CLIC and Muon Collider, with detailed simulation and limit setting on Wilson coefficients.

Findings

Sets 95% CL limits on Wilson coefficients of Higgs couplings.

Demonstrates the sensitivity of photon-photon collisions at future colliders.

Provides comparison with existing experimental bounds.

Abstract

In a model-independent way, we explore the potential of photon-induced interactions with the process $\gamma^* \gamma^* \rightarrow ZZ$ to investigate CP-conserving and CP-violating dimension-six operators of Higgs-gauge boson couplings using the Standard Model Effective Field Theory (SMEFT). The existence of anomalous $H\gamma\gamma$ and $HZZ$ couplings is discussed at 3 TeV Compact Linear Collider (CLIC) and 10 TeV Muon Collider (MuC) with integrated luminosities of 5 and 10 ab$^{-1}$, respectively. All signal and relevant background events are generated in MadGraph and passed through PYTHIA for parton showering and hadronization. The detector effects are evaluated using CLIC and MuC detector cards tuned in Delphes. We report the 95% confidence level limits on the Wilson coefficients $\overline{c}_\gamma$, $\overline{c}_{HB}$, $\overline{c}_{HW}$, $\widetilde{c}_\gamma$, $\widetilde{c}_{HB}$, and $\widetilde{c}_{HW}$ and compare them with the experimental and phenomenological limits.