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, p_T, 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 < p_T < 20 GeV/c and 2.0 < y < 4.5 are σ_{prompt J/ψ} = 8.154 ± 0.010 ± 0.283 μb, σ_{nonprompt 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 √s_NN = 5 TeV. The results are compared with theoretical predictions.

Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., et al. (2021). Measurement of J/ψ Production Cross-Sections in pp Collisions at √s = 5 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2021(11), 0-31 [10.1007/JHEP11(2021)181].

Measurement of J/ψ Production Cross-Sections in pp Collisions at √s = 5 TeV

Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Maccolini, S.;Manuzzi, D.;Patrignani, C.;Pisani, F.;Villa, A.;Zucchelli, S.;
2021

Abstract

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, p_T, 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 < p_T < 20 GeV/c and 2.0 < y < 4.5 are σ_{prompt J/ψ} = 8.154 ± 0.010 ± 0.283 μb, σ_{nonprompt 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 √s_NN = 5 TeV. The results are compared with theoretical predictions.
2021
Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., et al. (2021). Measurement of J/ψ Production Cross-Sections in pp Collisions at √s = 5 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2021(11), 0-31 [10.1007/JHEP11(2021)181].
Aaij, R.; Abdelmotteleb, A.S.W.; Abellán Beteta, C.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C.A.; Aiola, S.; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/849175
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