Séminaires

Gordana Milutinovic-Dumbelovic (University of Belgrade) : Higgs to electroweak bosons and rare Higgs decays at CLIC

Europe/Paris
1222-RC/SB-08 (LPNHE)

1222-RC/SB-08

LPNHE

Description
The Compact Linear Collider CLIC is an option for a future multi-TeV electron-positron collider, offering the potential for a rich precision physics programme, combined with sensitivity to a wide range of new phenomena. The physics reach of CLIC has been studied in the context of three distinct centre-of-mass energy stages, 350 GeV, 1.4 TeV and 3.0 TeV. This staged scenario provides the optimal environment for precise studies of the properties of the recently discovered Higgs boson. Operation at a few hundred GeV allows the couplings and width of the Higgs boson to be determined in a model-independent manner through the study of the Higgsstrahlung and WW-fusion processes. Operation at higher centre-of-mass energies, up to 3 TeV, provides higher statistics and the potential to study rare Higgs decays, the top Yukawa coupling and the Higgs self-coupling. The ultimate measurement precision is reached when measurements available from all energy stages are included in combined fits. The physics potential for measuring the cross section times branching ratio of the Higgs decay to electroweak bosons, as well as cross section times branching ratio of the rare Higgs decays, will be presented in this talk. The analyses are based on a full simulation of the CLIC_ILD or CLIC_SiD detector model and relevant physics and machine induced backgrounds.
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