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Measurement of the inclusive tt¯ cross section in final states with at least one lepton and additional jets with 302 pb−1 of pp collisions at √s = 5.02 TeVстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 октября 2025 г.
- Авторы: Boos E., Bunichev V., Dubinin M., Dudko L., Ershov A.A., Gribushin A., Klyukhin V., Obraztsov S., Perfilov M., Savrin V., Volkov P., Vorotnikov G.A., CMS Collaboration
- Журнал: Journal of High Energy Physics
- Том: 2025
- Номер: 04
- Год издания: 2025
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 099
- DOI: 10.1007/JHEP04(2025)099
- Аннотация: A measurement of the top quark pair (t¯t) production cross section in proton-proton collisions at a centre-of-mass energy of 5.02 TeV is presented. The data were collected at the LHC in autumn 2017, in dedicated runs with low-energy and low-intensity conditions with respect to the default configuration, and correspond to an integrated luminosity of 302 pb−1. The measurement is performed using events with one electron or muon, and multiple jets, at least one of them being identified as originating from a b quark (b tagged). Events are classified based on the number of all reconstructed jets and of b-tagged jets. Multivariate analysis techniques are used to enhance the separation between the signal and backgrounds. The measured cross section is 62.5 ± 1.6(stat)+2.6−2.5(syst) ± 1.2(lumi) pb. A combination with the result in the dilepton channel based on the same data set yields a value of 62.3 ± 1.5(stat) ± 2.4(syst) ± 1.2(lumi) pb, to be compared with the standard model prediction of 69.5+3.5−3.7 pb at next-to-next-to-leading order in perturbative quantum chromodynamics.
- Добавил в систему: Клюхин Вячеслав Иванович
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