Measurement of the Cross Section Times Branching Ratio of Light Higgs Decays at CLIC

TL;DR

This paper demonstrates that a 3 TeV CLIC collider can precisely measure Higgs boson decay branching ratios, providing crucial tests of the Standard Model's predictions for Higgs properties.

Contribution

It shows that high-energy CLIC can achieve high-precision measurements of Higgs decay modes, enabling detailed tests of Higgs couplings and the Standard Model.

Findings

H ightarrow bar{b} can be measured with 0.22% uncertainty

H ightarrow car{c} can be measured with 3.2% uncertainty

H ightarrow \mu ext{ extmu} can be measured with 15% uncertainty

Abstract

The investigation of the properties of a Higgs boson, especially a test of the predicted linear dependence of the branching ratios on the mass of the final state, is currently one of the most compelling arguments for building a linear collider. We demonstrate that the large Higgs boson production cross section at a 3 TeV CLIC machine allows for a precision measurement of the Higgs branching ratios. The cross section times branching ratio of the decays H \rightarrow b^{-}b, H \rightarrow cc^{-} and H \rightarrow {\mu}{\mu} can be measured with a statistical uncertainty of 0.22%, 3.2% and 15%, respectively.