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Prompt and nonprompt ψ(2S) production in pPb collisions at sNN = 8.16 TeV

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 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-ofmass frame, together with forward-to-backward ratios and nuclear modifcation 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.

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Journal of High Energy Physics, 2024, vol. 2024, num.111

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Prompt and nonprompt ψ(2S) production in pPb collisions at sNN = 8.16 TeV