Prospects for the Measurement of the Higgs Yukawa Couplings to b and c quarks, and muons at CLIC

TL;DR

This paper evaluates the potential of the 3TeV CLIC collider to precisely measure the Higgs boson's couplings to b and c quarks and muons, testing the Standard Model predictions for these interactions.

Contribution

It provides detailed projections for the measurement accuracy of Higgs decay channels at CLIC, highlighting the collider's capability for high-precision Higgs physics.

Findings

H->bb branching ratio can be measured with 0.23% uncertainty

H->cc branching ratio can be measured with 3.1% uncertainty

H->μμ branching ratio can be measured with 15% uncertainty

Abstract

The investigation of the properties of the Higgs boson, especially a test of the predicted linear dependence of the branching ratios on the mass of the final state is going to be an integral part of the physics program at colliders at the energy frontier for the foreseeable future. The large Higgs boson production cross section at a 3TeV CLIC machine allows for a precision measurement of the Higgs branching ratios. The cross section times branching ratio of the decays H->bb, H->cc and H->{\mu}{\mu} of a Standard Model Higgs boson with a mass of 120 GeV can be measured with a statistical uncertainty of 0.23%, 3.1% and 15%, respectively, assuming an integrated luminosity of 2 ab-1.