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 - Článek v odborném periodiku
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 … celkem 2851 autorů
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
Výzkumná infrastruktura: CERN-CZ II - 90104; e-INFRA CZ - 90140
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * p p: colliding beams * Higgs particle: hadronic decay
Obor OECD: Particles and field physics
Impakt faktor: 4.4, rok: 2022
Způsob publikování: 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.
Trvalý link: https://hdl.handle.net/11104/0336500