SM-like Higgs decay into two muons at 1.4 TeV CLIC

TL;DR

This paper evaluates the potential to measure the Higgs boson decay into two muons at 1.4 TeV CLIC, demonstrating a statistical accuracy of about 35.5% over four years, using detailed simulations of the detector and backgrounds.

Contribution

It provides a detailed simulation-based analysis of Higgs to muon decay measurement prospects at CLIC, including detector effects and background considerations.

Findings

Approximate 35.5% statistical accuracy in four years

Effective tagging of high-energy electrons in the forward region

Complementary to existing Higgs physics programs at CLIC

Abstract

The branching fraction measurement of the SM-like Higgs boson decay into two muons at 1.4 TeV CLIC will be described in this paper contributed to the LCWS13. The study is performed in the fully simulated ILD detector concept for CLIC, taking into consideration all the relevant physics and the beam-induced backgrounds, as well as the instrumentation of the very forward region to tag the high-energy electrons. Higgs couplings are known to be sensitive to BSM physics and we prove that BR times the Higgs production cross section can be measured with approximately 35.5% statistical accuracy in four years of the CLIC operation at 1.4 TeV centre-of-mass energy with unpolarised beams. The result is preliminary as the equivalent photon approximation is not considered in the cross-section calculations. This study complements the Higgs physics program foreseen at CLIC.