Precise predictions for the Higgs production in association with a W-boson pair at ILC

TL;DR

This paper calculates the electroweak radiative corrections to Higgs production with a W-boson pair at the ILC, revealing significant energy-dependent effects crucial for precision measurements and new physics searches.

Contribution

It provides the first comprehensive analysis of complete electroweak corrections to this process at the ILC, including detailed distributions and energy dependence.

Findings

EW corrections range from -19.4% to 0.2% depending on energy and Higgs mass

Cross section distributions are provided for invariant mass and transverse momenta

Results are essential for precise Higgs coupling measurements at the ILC

Abstract

The Higgs-boson production in association with a W-boson pair at $e^+e^-$ linear colliders is one of the important processes in probing the coupling between Higgs-boson and vector gauge bosons and discovering the signature of new physics. We describe the impact of the complete electroweak(EW) radiative corrections of ${\cal O}(\alpha_{ew})$ to this process in the standard model(SM) at the International Linear Collider(ILC), and investigate the dependence of the lowest-order(LO) and EW next-to-leading order(NLO) corrected cross sections on colliding energy $\sqrt{s}$ and Higg-boson mass. The LO and NLO EW corrected distributions of the invariant mass of W-boson pair and the transverse momenta of final $W$- and Higgs-boson are presented. Our numerical results show that the relative EW radiative correction($\delta_{ew}$) varies from -19.4% to 0.2% when $m_H=120 GeV$ and $\sqrt{s}$ goes up from $300 GeV$ to $1.2 TeV$.