Göttingen 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 24: Higgs Physics III (boson final states)

T 24.1: Vortrag

Dienstag, 1. April 2025, 16:15–16:30, ZHG104

Measurement of H → γ γ fiducial cross sections with 13.6 TeV CMS data — Caio Daumann, Johannes Erdmann, Florian Mausolf, •Jan Lukas Späh, and Maximilian Wrabetz — III. Physikalisches Institut A, RWTH Aachen University

The Higgs boson is of fundamental importance for the understanding of particle physics. Since its discovery in 2012, it has been studied extensively by the ATLAS and CMS collaborations. The measurement of Higgs boson production cross sections is crucial to study deviations from the standard model in the scalar sector.

In this presentation, the measurement of Higgs boson production cross sections in the diphoton decay channel with the CMS experiment is presented. The data used in this analysis were collected in proton-proton collisions at √s=13.6 TeV in 2022 and correspond to an integrated luminosity of 34.7 fb⁻¹. To reduce extrapolation uncertainties and improve the model independence of the measurement, the cross sections are measured in a fiducial phase space at particle level. Special emphasis is placed on the statistical analysis in this talk. This includes the simulation-based signal modelling, the data-driven background modelling, and the treatment of uncertainties.

This analysis lays the foundation for further measurements of Higgs boson processes in the diphoton decay channel by the CMS collaboration in Run 3 of the LHC and beyond. A brief outlook for future measurements and the potential of such analyses to constrain Higgs boson couplings to light quarks is given.

Keywords: Higgs boson; Photon; Cross section; Light quarks