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Measurement of the tt¯H and tH production rates in the H → bb¯ decay channel using proton-proton collision data at √s = 13 TeVстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Boos E., Bunichev V., Dubinin M., Dudko L., Klyukhin V., Kodolova O., Obraztsov S., Perfilov M., Petrushanko S.V., Savrin V., Volkov P., Vorotnikov G.A., CMS Collaboration
- Журнал: Journal of High Energy Physics
- Том: 2025
- Номер: 02
- Год издания: 2025
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 097
- DOI: 10.1007/JHEP02(2025)097
- Аннотация: An analysis of the production of a Higgs boson (H) in association with a top quark-antiquark pair (tt¯H) or a single top quark (tH) is presented. The Higgs boson decay into a bottom quark-antiquark pair (H → bb¯) is targeted, and three different final states of the top quark decays are considered, defined by the number of leptons (electrons or muons) in the event. The analysis utilises proton-proton collision data collected at the CERN LHC with the CMS experiment at √s = 13 TeV in 2016–2018, which correspond to an integrated luminosity of 138 fb^−1. The observed tt¯H production rate relative to the standard model expectation is 0.33 ± 0.26 = 0.33 ± 0.17(stat) ± 0.21(syst). Additionally, the tt¯H production rate is determined in intervals of Higgs boson transverse momentum. An upper limit at 95% confidence level is set on the tH production rate of 14.6 times the standard model prediction, with an expectation of 19.3+9.2−6.0. Finally, constraints are derived on the strength and structure of the coupling between the Higgs boson and the top quark from simultaneous extraction of the tt¯H and tH production rates, and the results are combined with those obtained in other Higgs boson decay channels.
- Добавил в систему: Клюхин Вячеслав Иванович
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