Aachen 2019 – scientific programme
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T: Fachverband Teilchenphysik
T 9: Higgs: Erweiterte Modelle
T 9.5: Talk
Monday, March 25, 2019, 17:00–17:15, S07
Double Higgs boson production and Higgs self-coupling at CLIC — Philipp Roloff1, •Ulrike Schnoor1, Rosa Simoniello1,2, and Boruo Xu3 — 1CERN, Geneva, Switzerland — 2Johannes-Gutenberg-Universität Mainz, Germany — 3University of Cambridge, UK
The trilinear Higgs self-coupling has a central role in the understanding of electroweak symmetry breaking as it determines the shape of the Higgs potential. Its investigation is a crucial component of physics at future colliders. CLIC, the Compact Linear Collider, is a high-energy electron-positron accelerator being studied as an option for the post-LHC era. Its high-energy stages at √s=1.5 and 3 TeV give direct access to Higgs boson pair production, from which the Higgs self-coupling can be extracted. This talk covers the full-simulation analysis of the expected sensitivity of the high-energy stages of CLIC to double Higgs production. The cross-section measurement of double Higgsstrahlung and differential observables in W-fusion Higgs-pair production are combined to give the expected sensitivity of CLIC to the trilinear Higgs self-coupling.