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Measurement of Υ production in pp collisions at \sqrts = 5 TeVстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Бережной А.В., Горелов И.В., Данилина А.В., Козачук А.Д., Лефлат А.К., Никитин Н.В., Саврина Д.В., Соломин А.Н., Волков В.Ю., Жуков В.Ю., Королев М.Г., LHCb Collaboration
- Журнал: Journal of High Energy Physics
- Том: 7
- Год издания: 2023
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 069
- DOI: 10.1007/JHEP07(2023)069
- Аннотация: The production cross-sections of Υ mesons, namely Υ(1S), Υ(2S) and Υ(3S), in pp collisions at s√=5 TeV are measured with a data sample corresponding to an integrated luminosity of 9.13±0.18 pb−1 collected by the LHCb detector. The Υ mesons are reconstructed in the decay mode Υ→μ+μ−. Double differential cross-sections times branching fractions, as functions of the transverse momentum pT and the rapidity y of the Υ mesons, are measured in the range pT<20 GeV/c and 2.0<y<4.5. The results integrated over these pT and y ranges areσ(Υ(1S))×B(Υ(1S)→μ+μ−)=2101±33±83 pb,σ(Υ(2S))×B(Υ(2S)→μ+μ−)=526±20±21 pb,σ(Υ(3S))×B(Υ(3S)→μ+μ−)=242±16±10 pb,where the first uncertainties are statistical and the second are systematic. The ratios of cross-sections between measurements of two different Υ states and between measurements at different center-of-mass energies are determined. The nuclear modification factor of Υ(1S) at s√=5 TeV is updated as well using the directly measured cross-section results from this analysis.
- Добавил в систему: Бережной Александр Викторович