Prompt and nonprompt ψ (2 S ) production in p Pb collisions at s NN = 8. 16 TeV

Journal article

The production of ψ(2S) mesons in proton-lead collisions at a centre-of-mass energy per nucleon pair of sNN = 8.16 TeV is studied with the LHCb detector using data corresponding to an integrated luminosity of 34 nb−1. The prompt and nonprompt ψ(2S) production cross-sections and the ratio of the ψ(2S) to J/ψ cross-section are measured as a function of the meson transverse momentum and rapidity in the nucleon-nucleon centre-of-mass frame, together with forward-to-backward ratios and nuclear modification factors. The production of prompt ψ(2S) is observed to be more suppressed compared to pp collisions than the prompt J/ψ production, while the nonprompt productions have similar suppression factors.

Authors: Aaij, R; Abdelmotteleb, ASW; Abellan Beteta, C; Abudinén, F; Ackernley, T

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer
• Journal: Journal of High Energy Physics
• Volume: 2024
• Issue: 4
• Article number: 111
• Publication date: 2024-04-19
• Acceptance date: 2024-03-25
• DOI: 10.1007/jhep04(2024)111
• EISSN: 1029-8479
• Language: English
• Keywords: Particle and Resonance Production; QCD; Hadron-Hadron Scattering; Heavy Quark Production