ECFA2022

Abstracts

Physics potential for σ x BR(H → ZZ∗) measurement at CLIC

• Speaker: Natasa Vukasinovic
• Status: Submitted
• Abstract: CLIC is a linear e+e- collider designed to reach center-of-mass energies ranging from 350 GeV, 1.4 TeV up to 3 TeV. Individual measurements of Higgs couplings in various Higgs production and decay channels are subject of a global fit in order to achieve the ultimate statistical precision of the cumulative CLIC data. In this talk we discuss the σxBR(H → ZZ∗) measurement at all CLIC energy stages, in a full simulation of detector and experimental conditions.

Measurement of the Higgs to γγ branching fraction at 3 TeV CLIC

• Speaker: G.Kačarević
• Status: Submitted
• Abstract: Here we address the results of a full simulation of experimental measurement of the Standard Model Higgs boson decaying to a pair of photons at 3 TeV center-of-mass energy at the Compact Linear Collider (CLIC). Since photons do not couple to Higgs boson at a tree level, any deviation of the Higgs to photons coupling may indicate a New Physics. We show that the product of the Higgs production cross-section in W+W− fusion and BR (H → γγ) as the observable for determination of the Higgs to photons coupling, can be measured with a relative statistical precision of 5.5%, assuming the integrated luminosity of 5 ab−1 and unpolarized beams.