Anomalous WWH couplings in gamma gamma collision with initial beams and final state polarizations

TL;DR

This paper investigates how initial beam and final state polarizations in gamma-gamma collisions can improve constraints on anomalous Higgs couplings, providing tighter limits at high energies with specific polarization configurations.

Contribution

It introduces a detailed analysis of polarization effects on constraining anomalous Higgs couplings in gamma-gamma collisions, enhancing sensitivity limits compared to previous approaches.

Findings

Polarization significantly improves sensitivity to anomalous couplings.

95% confidence level limits are established for couplings at different energies.

Initial beam and final state polarizations lead to better constraints on $b_{W}$ and $eta_{W}$.

Abstract

The constraints on anomalous Higgs boson couplings are investigated through the process $\gamma\gamma \to W^{+}W^{-}H$. Considering the longitudinal and transverse polarization states of the final $W^{+}$ and $W^{-}$ bosons and incoming beam polarizations, we find 95% confidence level limits on the anomalous coupling parameters $\Delta a_{W}$, $b_{W}$ and $\beta_{W}$ with an integrated luminosity of 500 $fb^{-1}$ and $\sqrt{s}$=0.5, 1 TeV energies. We show that initial beam and final state polarizations lead to a significant improvement on the sensitivity limits of the anomalous coupling parameters $b_{W}$ and $\beta_{W}$.