The measurement of charmonium states produced in proton-neon (p Ne) 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 √s_NN = 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-of-mass 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.

Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Charmonium Production in p Ne Collisions at √s_NN = 68.5 GeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(7), 1-11 [10.1140/epjc/s10052-023-11608-6].

Charmonium Production in p Ne Collisions at √s_NN = 68.5 GeV

Carbone, A.;Ferrari, F.;Galli, D.;Manuzzi, D.;Patrignani, C.;Villa, A.;Zucchelli, S.;
2023

Abstract

The measurement of charmonium states produced in proton-neon (p Ne) 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 √s_NN = 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-of-mass 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.
2023
Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Charmonium Production in p Ne Collisions at √s_NN = 68.5 GeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(7), 1-11 [10.1140/epjc/s10052-023-11608-6].
Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/952275
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