The production cross-sections of J/ψ mesons in proton-proton collisions at √ s = 5TeV 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 are σprompt 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 surement 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.

Measurement of J/?? production cross-sections in pp collisions at $$ \sqrt{s} $$ = 5 TeV / Aaij, R., Abdelmotteleb, A.S.W., Beteta, C.Abell??n., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Agapopoulou, C., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alkhazov, G., Alvarez Cartelle, P., Amato, S., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2021:11(2021). [10.1007/jhep11(2021)181]

Measurement of J/?? production cross-sections in pp collisions at $$ \sqrt{s} $$ = 5 TeV

G. Casse;A. Sarti;
2021

Abstract

The production cross-sections of J/ψ mesons in proton-proton collisions at √ s = 5TeV 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 are σprompt 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 surement 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.
2021
Hadron-Hadron scattering (experiments), Heavy quark production, QCD, Quarkonium
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of J/?? production cross-sections in pp collisions at $$ \sqrt{s} $$ = 5 TeV / Aaij, R., Abdelmotteleb, A.S.W., Beteta, C.Abell??n., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Agapopoulou, C., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alkhazov, G., Alvarez Cartelle, P., Amato, S., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2021:11(2021). [10.1007/jhep11(2021)181]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1673373
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