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Measurement of beauty and charm production in pp collisions at √s = 5.02 TeV via non-prompt and prompt D mesons

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dc.contributor.authorAcharya, S.
dc.contributor.authorAdamova, D.
dc.contributor.authorAdler, A.
dc.contributor.authorAdolfsson, J.
dc.contributor.authorBelyaev, V.
dc.contributor.authorBogdanov, A.
dc.contributor.authorBolozdynya, A.
dc.contributor.authorBorissov, A.
dc.contributor.authorGrigoriev, V.
dc.contributor.authorKaplin, V.
dc.contributor.authorKondratyeva, N.
dc.contributor.authorLoginov, V.
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.date.accessioned2024-12-02T10:19:07Z
dc.date.available2024-12-02T10:19:07Z
dc.date.issued2021
dc.description.abstract© 2021, The Author(s).The pT-differential production cross sections of prompt and non-prompt (produced in beauty-hadron decays) D mesons were measured by the ALICE experiment at midrapidity (|y|< 0.5) in proton-proton collisions at s = 5.02 TeV. The data sample used in the analysis corresponds to an integrated luminosity of (19.3 ± 0.4) nb−1. D mesons were reconstructed from their decays D0→ K−π+, D+→ K−π+π+, and Ds+→ϕπ+→K−K+π+ and their charge conjugates. Compared to previous measurements in the same rapidity region, the cross sections of prompt D+ and Ds+ mesons have an extended pT coverage and total uncertainties reduced by a factor ranging from 1.05 to 1.6, depending on pT, allowing for a more precise determination of their pT-integrated cross sections. The results are well described by perturbative QCD calculations. The fragmentation fraction of heavy quarks to strange mesons divided by the one to non-strange mesons, fs/(fu + fd), is compatible for charm and beauty quarks and with previous measurements at different centre-of-mass energies and collision systems. The b b ¯ production cross section per rapidity unit at midrapidity, estimated from non-prompt D-meson measurements, is dσbb¯/dy||y|<0.5=34.5±2.4(stat)−2.9+4.7(tot.syst) μb. It is compatible with previous measurements at the same centre-of-mass energy and with the cross section pre- dicted by perturbative QCD calculations. [Figure not available: see fulltext.]
dc.identifier.citationMeasurement of beauty and charm production in pp collisions at √s = 5.02 TeV via non-prompt and prompt D mesons / Acharya, S. [et al.] // Journal of High Energy Physics. - 2021. - 2021. - № 5. - 10.1007/JHEP05(2021)220
dc.identifier.doi10.1007/JHEP05(2021)220
dc.identifier.urihttps://www.doi.org/10.1007/JHEP05(2021)220
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85107372220&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000762505700001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/25547
dc.relation.ispartofJournal of High Energy Physics
dc.titleMeasurement of beauty and charm production in pp collisions at √s = 5.02 TeV via non-prompt and prompt D mesons
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue5
oaire.citation.volume2021
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