Buchumschlag

Study of exclusive photoproduction of charmonium in ultra-peripheral lead-lead collisions

The cross-sections of exclusive (coherent) photoproduction J/ψ and ψ(2S) mesons in ultra-peripheral PbPb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV are measured using a data sample corresponding to an integrated luminosity of 228 ± 10 μb−1, collected by the LHCb experiment in...

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Hauptverfasser: Aaij, Roel (Verfasst von) , Archilli, Flavio (Verfasst von) , Bachmann, Sebastian (Verfasst von) , Berninghoff, Daniel (Verfasst von) , Borsato, Martino (Verfasst von) , Caspary, Rowina (Verfasst von) , Frau, Giulia (Verfasst von) , Grabowski, Jascha (Verfasst von) , Günther, Paul André (Verfasst von) , Han, Xiaoxue (Verfasst von) , Hansmann-Menzemer, Stephanie (Verfasst von) , Hu, Jiangqiao (Verfasst von) , Kubat, Jakub (Verfasst von) , Leverington, Blake (Verfasst von) , Li, Peilian (Verfasst von) , Marks, Jörg (Verfasst von) , Unverzagt, Daniel Joachim (Verfasst von) , Uwer, Ulrich (Verfasst von) , Witola, Lukas (Verfasst von) , Zhelezov, Alexey (Verfasst von)
Körperschaft: LHCb Collaboration (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: June 23, 2023
In: Journal of high energy physics
Year: 2023, Heft: 6, Pages: 1-25
ISSN:1029-8479
DOI:10.1007/JHEP06(2023)146
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP06(2023)146
Volltext
Verfasserangaben:the LHCb collaboration
Beschreibung
Zusammenfassung:The cross-sections of exclusive (coherent) photoproduction J/ψ and ψ(2S) mesons in ultra-peripheral PbPb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV are measured using a data sample corresponding to an integrated luminosity of 228 ± 10 μb−1, collected by the LHCb experiment in 2018. The differential cross-sections are measured separately as a function of transverse momentum and rapidity in the nucleus-nucleus centre-of-mass frame for J/ψ and ψ(2S) mesons. The integrated cross-sections are measured to be σcoh J/ψ = 5.965 ± 0.059 ± 0.232 ± 0.262 mb and σcoh ψ(2S) = 0.923 ± 0.086 ± 0.028 ± 0.040 mb, where the first listed uncertainty is statistical, the second systematic and the third due to the luminosity determination. The cross-section ratio is measured to be σcoh ψ(2S)/σcoh J/ψ= 0.155 ± 0.014 ± 0.003, where the first uncertainty is statistical and the second is systematic. These results are compatible with theoretical predictions.
Beschreibung:The LHCb collaboration: R. Aaij, F. Archilli, S. Bachmann, M. Bachmayer, D. Berninghoff, M. Borsato, R. Caspary, G. Frau, J. Grabowski, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, J. Kubat, B. Leverington, P. Li, J. Marks, D.J. Unverzagt, U. Uwer, L. Witola, A. Zhelezov [und viele weitere]
Gesehen am 20.10.2023
Beschreibung:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP06(2023)146

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