Coherent production of J/psi mesons is studied in ultraperipheral lead-lead collisions at a nucleon-nucleon centre-of-mass energy of 5 TeV, using a data sample collected by the LHCb experiment corresponding to an integrated luminosity of about 10 mu b(-1). The J/psi mesons are reconstructed in the dimuon final state and are required to have transverse momentum below 1 GeV. The cross-section within the rapidity range of 2.0 < y < 4.5 is measured to be 4.45 +/- 0.24 +/- 0.18 +/- 0.58 mb, where the first uncertainty is statistical, the second systematic and the third originates from the luminosity determination. The cross-section is also measured in J/psi rapidity intervals. The results are compared to predictions from phenomenological models.
Study of coherent J/ψ production in lead-lead collisions at $$ \sqrt{{\mathrm{s}}_{\mathrm{NN}}} $$ = 5 TeV [Study of coherent J/ψ production in lead-lead collisions at √sNN = 5 TeV] / R. Aaij, C.A.B.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2022:7(2022 Jul 19), pp. 117.1-117.19. [10.1007/JHEP07(2022)117]
Study of coherent J/ψ production in lead-lead collisions at $$ \sqrt{{\mathrm{s}}_{\mathrm{NN}}} $$ = 5 TeV [Study of coherent J/ψ production in lead-lead collisions at √sNN = 5 TeV]
J. Fu;D. Marangotto;A. Merli;N. Neri;M. Petruzzo;E. Spadaro Norella;
2022
Abstract
Coherent production of J/psi mesons is studied in ultraperipheral lead-lead collisions at a nucleon-nucleon centre-of-mass energy of 5 TeV, using a data sample collected by the LHCb experiment corresponding to an integrated luminosity of about 10 mu b(-1). The J/psi mesons are reconstructed in the dimuon final state and are required to have transverse momentum below 1 GeV. The cross-section within the rapidity range of 2.0 < y < 4.5 is measured to be 4.45 +/- 0.24 +/- 0.18 +/- 0.58 mb, where the first uncertainty is statistical, the second systematic and the third originates from the luminosity determination. The cross-section is also measured in J/psi rapidity intervals. The results are compared to predictions from phenomenological models.| File | Dimensione | Formato | |
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