6–11 Jul 2025
PALAIS DU PHARO, Marseille, France
Europe/Paris timezone

Higgs precision at FCC-hh

11 Jul 2025, 09:30
20m
PALAIS DU PHARO, Marseille, France

PALAIS DU PHARO, Marseille, France

Parallel T08 - Higgs Physics T08

Speaker

Paola Mastrapasqua (Universite Catholique de Louvain (UCL) (BE))

Description

The FCC-hh, operating at a centre-of-mass energy of 84 TeV, will produce unprecedentedly large samples of single and double Higgs bosons, enabling detailed studies of rare decays and precise measurements of the Higgs self-coupling. With billions of single-Higgs events, FCC-hh will measure rare decays such as H→μμ, H→γγ, and H→Zγ with percent-level precision. It will also significantly enhance sensitivity to invisible decays, reaching branching fractions as low as $10^{-4}$. It will also probe to top Yukawa interaction with unprecedented precision via the ttH production mechanism. Furthermore, with tens of millions of Higgs pairs events, the FCC-hh will precisely determine the Higgs self-coupling, crucial for understanding electroweak symmetry breaking and vacuum stability, with an expected precision at the few-percent level. These measurements will provide complementary information to FCC-ee and test the Higgs sector to unprecedented accuracy.

Authors

Markus Klute (KIT) Paola Mastrapasqua (Universite Catholique de Louvain (UCL) (BE))

Presentation materials

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