Charmonium production in pNe collisions at √sNN = 68.5 GeV

Audurier, B.;Belin, S.;Brundu, D.;Bursche, A.;Cardini, A.;Chen, S.;Dettori, F.;Dordei, F.;Litvinov, R.;Manca, G.;Muzzetto, P.;Oldeman, R.;Saitta, B.;Sun, J.;
2023-01-01

Abstract

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 2.5TeV protons colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy sNN−−−√=68.5GeV . 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
Inglese
83
7
625
11
https://link.springer.com/article/10.1140/epjc/s10052-023-11608-6
Esperti anonimi
scientifica
Aaij, R.; Abdelmotteleb, A. S. W.; Beteta, C. Abellan; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C ...espandi
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
1042
open
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