Measurement of Higgs Branching Ratio at ILC

TL;DR

This paper assesses the precision of measuring Higgs boson decay probabilities at the ILC, focusing on H->bb and H->cc channels, to better understand Higgs coupling to particles.

Contribution

It provides the first detailed estimate of Higgs branching ratio measurement accuracy at 250 GeV ILC using ZH->vvH events.

Findings

H->bb branching ratio measured with 1.1% accuracy.

H->cc branching ratio measured with 13.7% accuracy.

Demonstrates feasibility of precise Higgs measurements at ILC.

Abstract

Measurement of Higgs branching ratio is necessary to investigate Higgs coupling to particle masses. Especially, it is the most important program to measure the branching ratio of H->bb and H->cc at the international linear collider (ILC). We have studied the measurement accuracy of Higgs branching ratio at ILC with Sqrt(s) = 250 GeV by using ZH->vvH events. We obtained the Higgs branching ratio with 1.1% and 13.7% accuracy for H->bb and H->cc, respectively.