0635497 - FZÚ 2026 RIV DE eng J - Journal Article
Aad, G. - Aakvaag, E. - Abbott, B. - Chudoba, Jiří - Federičová, Pavla - Hejbal, Jiří - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Nechanský, Filip - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2902 authors
Search for the associated production of charm quarks and a Higgs boson decaying into a photon pair with the ATLAS detector.
Journal of High Energy Physics. Roč. 2025, č. 2 (2025), č. článku 045. ISSN 1029-8479. E-ISSN 1029-8479
R&D Projects: GA MŠMT(CZ) EH22_008/0004632
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : Hadron-Hadron Scattering * Higgs physics * ATLAS
OECD category: Particles and field physics
Impact factor: 5, year: 2023 ; AIS: 0.998, rok: 2023
Method of publishing: Open access
DOI: https://doi.org/10.1007/JHEP02(2025)045

A search for the production of a Higgs boson and one or more charm quarks, in which the Higgs boson decays into a photon pair, is presented. This search uses proton-proton collision data with a centre-of-mass energy of √s​ = 13 TeV and an integrated luminosity of 140 fb−1 recorded by the ATLAS detector at the Large Hadron Collider. The analysis relies on the identification of charm-quark-containing jets, and adopts an approach based on Gaussian process regression to model the non-resonant di-photon background. The observed (expected, assuming the Standard Model signal) upper limit at the 95% confidence level on the cross-section for producing a Higgs boson and at least one charm-quark-containing jet that passes a fiducial selection is found to be 10.6 pb (8.8 pb). The observed (expected) measured cross-section for this process is 5.3 ± 3.2 pb (2.9 ± 3.1 pb).
Permanent Link: https://hdl.handle.net/11104/0366566