Direct constraint on the Higgs–charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector

0562019 - FZÚ 2023 RIV DE eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2851 authors
Direct constraint on the Higgs–charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector.
European Physical Journal C. Roč. 82, č. 8 (2022), č. článku 717. ISSN 1434-6044. E-ISSN 1434-6052
Research Infrastructure: CERN-CZ II - 90104; e-INFRA CZ - 90140
Institutional support: RVO:68378271
Keywords : ATLAS * p p: colliding beams * Higgs particle: hadronic decay
OECD category: Particles and field physics
Impact factor: 4.4, year: 2022
Method of publishing: Open access

A search for the Higgs boson decaying into a pair of charm quarks is presented. The analysis uses proton-proton collisions to target the production of a Higgs boson in association with a leptonically decaying WW or ZZ boson. The dataset delivered by the LHC at a centre-of-mass energy of s=13s ​=13 TeV and recorded by the ATLAS detector corresponds to an integrated luminosity of 139 fb−1−1. Flavour-tagging algorithms are used to identify jets originating from the hadronisation of charm quarks. The analysis method is validated with the simultaneous measurement of WW,WZWW,WZ and ZZZZ production, with observed (expected) significances of 2.62.6 (2.22.2) standard deviations above the background-only prediction for the (W/Z)Z(→ccˉ)(W/Z)Z(→ccˉ) process and 3.83.8 (4.64.6) standard deviations for the (W/Z)W(→cq)(W/Z)W(→cq) process.
Permanent Link: https://hdl.handle.net/11104/0336500