Measurement of the ψ(2S) to J/ψ cross-section ratio as a function of centrality in PbPb collisions at √sNN = 5.02 TeV
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Author(s)
Aaij, R.
Abdelmotteleb, A. S. W.
Abellan Beteta, C.
Abudinén, F.
Ackernley, T.
Adefisoye, A. A.
Adeva, B.
Adinolfi, M.
Adlarson, P.
Agapopoulou, C.
Date Issued
July 23, 2025
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
The LHCb collaboration., Aaij, R., Abdelmotteleb, A.S.W. et al. Measurement of the ψ(2S) to J/ψ cross-section ratio as a function of centrality in PbPb collisions at √sNN = 5.02 TeV. J. High Energ. Phys. 2025, 235 (2025).
Version
Final published version
Abstract
The ratio of prompt production cross-sections of ψ(2S) and J/ψ mesons in their
dimuon final state is measured as a function of centrality, using data collected by the LHCb
detector in PbPb collisions at √
sNN = 5.02 TeV, for the first time in the forward rapidity
region. The measured ratio shows no dependence on the collision centrality, and is compared
to the latest theory predictions and to the recent measurements in literature.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1007/JHEP07(2025)235
