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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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.
Date issued
2025-07-23Department
Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
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