26-30 July 2021
Zoom
Europe/Berlin timezone

Higgs and double Higgs production at CLIC e+e- energies up to 3 TeV

29 Jul 2021, 10:38
17m
Zoom

Zoom

Parallel session talk Higgs Physics T09: Higgs Physics

Speaker

Lars Rickard Stroem (ATLAS (ATLAS SM and Beyond))

Description

The Compact Linear Collider (CLIC) is a mature option for a future electron-positron collider operating at centre-of-mass energies of up to 3 TeV. CLIC would be built and operated in a staged approach with three centre-of-mass energy stages currently assumed to be 380 GeV, 1.5 TeV, and 3 TeV. This presentation provides a full overview of the CLIC Higgs physics potential in both the Higgsstrahlung (e+e- => ZH) and vector-boson fusion (e+e- => Hnunu) production modes at the three CLIC stages. The studies have been performed in full simulation. Latest results include Higgstrahlung at the highest energy, which is of particular interest as contributions from BSM effects to this process grow with energy. Ongoing studies of the Higgs branching ratio to photons at 3 TeV, as wells as ZZ* decay at various energies will also be included. The presentation includes latest results on the extraction of the Higgs self-coupling from double Higgs production at 1.5 TeV and 3 TeV. The Higgs self-coupling is of particular interest for determining the shape of the Higgs potential and for its sensitivity to a variety of BSM physics scenarios. At the higher-energy stages CLIC will produce Higgs boson pairs both via double Higgsstrahlung and via vector-boson fusion. Measurements of these processes lead to a determination of the Higgs self-coupling with a precision around 10%.

Collaboration / Activity CLICdp collaboration
First author Lucie Linssen
Email lucie.linssen@cern.ch

Primary author

Lars Rickard Stroem (ATLAS (ATLAS SM and Beyond))

Presentation Materials