# name
Charmonium production in pNe collisions at √sNN = 68.5 GeV

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The measurement of charmonium states produced in proton-neon (pNe) collisions by the LHCb experiment in its fixed-target configuration is presented. The production of J/ψ and ψ(2S) mesons is studied with a beam of 2.5 TeV protons colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy √sNN = 68.5 GeV. The data sample corresponds to an integrated luminosity of 21.7 ± 1.4 nb−1. The J/ψ and ψ(2S) hadrons are reconstructed in μ+μ− final states. The J/ψ production cross-section per target nucleon in the centre-ofmass rapidity range y ∈ [−2.29, 0] is found to be 506 ± 8 ± 46 nb/nucleon. The ratio of J/ψ and D0 cross-sections is evaluated to (1.06 ± 0.02 ± 0.09)%. The ψ(2S) to J/ψ relative production rate is found to be (1.67±0.27±0.10)% in good agreement with other measurements involving beam and target nuclei of similar sizes

# metadata.dc.publisher[].value
Società Italiana di Fisica & Springer Verlag

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European Physical Journal C, 2023, vol. 83, num.625, p. 1-11

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Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.title[].value
Charmonium production in pNe collisions at √sNN = 68.5 GeV