# Physics potential for the measurement of {\large ${\sigma(HZ)\times BR(H \rightarrow WW^{*})}$} at the 250 GeV ILC

## TL;DR

This study evaluates the precision of measuring the product of Higgs-strahlung cross section and Higgs to WW* branching ratio at the 250 GeV stage of the ILC, using full detector simulation and multivariate analysis.

## Contribution

It provides a detailed simulation-based estimate of the statistical uncertainty for this Higgs measurement at the ILC, demonstrating the potential precision achievable.

## Key findings

- Relative statistical uncertainty of 4.1% for the measurement.
- Analysis performed with 500 fb$^{-1}$ of data using the ILD detector.
- Full simulation and multivariate techniques applied to hadronic final states.

## Abstract

The potential of measurement of the relative statistical uncertainty of the ${{\sigma}(HZ)\times BR(H \rightarrow WW^{*})}$ decay, at the International Linear Collider (ILC) has been presented. The study is performed at the lowest energy stage of the proposed staged ILC, the 250 GeV stage. Monte Carlo samples representing all SM processes were passed through full detector simulation of the International Large Detector (ILD) model. Fully hadronic final state has been analyzed using an integrated luminosity of 500 fb$^{-1}$, using multivariate analysis technique. The obtained relative statistical uncertainty $\Delta (\sigma \cdot BR)$ / $ (\sigma\cdot BR)$ of the $\sigma(HZ)\cdot BR(H\rightarrow WW^*) $ is 4.1$\%$.