Measurement of J/ψ production cross-sections in pp collisions at √s = 5 TeV
| Parent link: | Journal of High Energy Physics Vol. 2021, iss. 11.— 2021.— [117, 18 p.] |
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| Weitere Verfasser: | , , , , , |
| Zusammenfassung: | Title screen The production cross-sections of J/ψ mesons in proton-proton collisions at a centre-of-mass energy of √s = 5 TeV are measured using a data sample corresponding to an integrated luminosity of 9.13 ± 0.18 pb−1, collected by the LHCb experiment. The cross-sections are measured differentially as a function of transverse momentum, pT, and rapidity, y, and separately for J/ψ mesons produced promptly and from beauty hadron decays (nonprompt). With the assumption of unpolarised J/ψ mesons, the production cross-sections integrated over the kinematic range 0 < pT < 20 GeV/c and 2.0 < y < 4.5 areσprompt J/ψ=8.154±0.010±0.283 μb,σnonprompt J/ψ=0.820±0.003±0.034 μb,where the first uncertainties are statistical and the second systematic. These cross-sections are compared with those at √s = 8 TeV and 13 TeV, and are used to update the measurement of the nuclear modification factor in proton-lead collisions for J/ψ mesons at a centre-of-mass energy per nucleon pair of √sNN = 5 TeV. The results are compared with theoretical predictions. |
| Sprache: | Englisch |
| Veröffentlicht: |
2021
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| Schlagworte: | |
| Online-Zugang: | http://earchive.tpu.ru/handle/11683/80981 https://doi.org/10.1007/JHEP11(2021)181 |
| Format: | Elektronisch Buchkapitel |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668738 |