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Prompt and non-prompt J/ψ production cross sections at midrapidity in proton-proton collisions at √s = 5.02 and 13 TeV

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dc.contributor.authorAcharya, S.
dc.contributor.authorAdamova, D.
dc.contributor.authorAdler, A.
dc.contributor.authorAglieri, Rinella G.
dc.contributor.authorBelyaev, V.
dc.contributor.authorBogdanov, A.
dc.contributor.authorBolozdynya, A.
dc.contributor.authorGrigoriev, V.
dc.contributor.authorKaplin, V.
dc.contributor.authorKondratyeva, N.
dc.contributor.authorLoginov, V.
dc.contributor.authorOkorokov, V. A.
dc.contributor.authorSamsonov, V.
dc.contributor.authorSelyuzhenkov, I.
dc.contributor.authorБеляев, Владимир Никитич
dc.contributor.authorБогданов, Алексей Александрович
dc.contributor.authorБолоздыня, Александр Иванович
dc.contributor.authorГригорьев, Владислав Анатольевич
dc.contributor.authorКондратьева, Наталья Викторовна
dc.contributor.authorЛогинов, Виталий Александрович
dc.contributor.authorОкороков, Виталий Алексеевич
dc.date.accessioned2024-12-25T15:50:06Z
dc.date.available2024-12-25T15:50:06Z
dc.date.issued2022
dc.description.abstract© 2022, The Author(s).The production of J/ψ is measured at midrapidity (|y| < 0.9) in proton-proton collisions at s = 5.02 and 13 TeV, through the dielectron decay channel, using the ALICE detector at the Large Hadron Collider. The data sets used for the analyses correspond to integrated luminosities of Lint = 19.4 ± 0.4 nb−1 and Lint = 32.2 ± 0.5 nb−1 at s = 5.02 and 13 TeV, respectively. The fraction of non-prompt J/ψ mesons, i.e. those originating from the decay of beauty hadrons, is measured down to a transverse momentum pT = 2 GeV/c (1 GeV/c) at s = 5.02 TeV (13 TeV). The pT and rapidity (y) differential cross sections, as well as the corresponding values integrated over pT and y, are carried out separately for prompt and non-prompt J/ψ mesons. The results are compared with measurements from other experiments and theoretical calculations based on quantum chromodynamics (QCD). The shapes of the pT and y distributions of beauty quarks predicted by state-of-the-art perturbative QCD models are used to extrapolate an estimate of the b b ¯ pair cross section at midrapidity and in the total phase space. The total b b ¯ cross sections are found to be σbb ¯ = 541 ± 45 (stat.) ± 69 (syst.)−12+10 (extr.) μb and σbb ¯ = 218±37 (stat.)±31 (syst.)−9.1+8.2 (extr.) μb at s = 13 and 5.02 TeV, respectively. The value obtained from the combination of ALICE and LHCb measurements in pp collisions at s = 13 TeV is also provided. [Figure not available: see fulltext.]
dc.identifier.citationPrompt and non-prompt J/ψ production cross sections at midrapidity in proton-proton collisions at √s = 5.02 and 13 TeV / Acharya, S. [et al.] // Journal of High Energy Physics. - 2022. - 2022. - № 3. - 10.1007/JHEP03(2022)190
dc.identifier.doi10.1007/JHEP03(2022)190
dc.identifier.urihttps://www.doi.org/10.1007/JHEP03(2022)190
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85134008800&origin=resultslist
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/28115
dc.relation.ispartofJournal of High Energy Physics
dc.titlePrompt and non-prompt J/ψ production cross sections at midrapidity in proton-proton collisions at √s = 5.02 and 13 TeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue3
oaire.citation.volume2022
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