SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 32: Di-Higgs, Higgs BSM

T 32.3: Vortrag

Dienstag, 21. März 2023, 17:30–17:45, HSZ/0204

Prospects for constraints on light-quark Yukawa couplings from differential distributions of Higgs boson production in the diphoton decay channel — Johannes Erdmann and •Jan Lukas Späh — III. Physikalisches Institut A, RWTH Aachen University

More than ten years after the discovery of the Higgs boson, various production and decay channels have been explored experimentally. However, the constraints on couplings to the light quarks up, down, and strange are comparatively weak as they are challenging to probe experimentally.

In this talk, studies to constrain these couplings based on the production mode of quark-antiquark annihilation in the diphoton decay channel are presented. The focus lies on the discrimination of this qq → H + X component against the dominant Standard Model contribution from gluon-gluon fusion. For this, the transverse momentum and the rapidity of the Higgs boson play an important role.

Expected upper limits on the Yukawa couplings to the three light quark species are presented. The potential for this interpretation in light of the large statistical power of the datasets collected with the High-Luminosity Large Hadron Collider is highlighted.