Measurement of the ψ(2S) to J/ψ cross-section ratio as a function of centrality in PbPb collisions at √s_NN = 5.02 TeV

2024/11/08 by R. Aaij, LHCb collaboration, A. S. W. Abdelmotteleb +2268 · 1 voice
#nucl-ex #hep-ex

paper · pdf · doi:10.48550/arxiv.2411.05669

Abstract

The dissociation of quarkonium states with different binding energies produced in heavy-ion collisions is a powerful probe for investigating the formation and properties of the quark-gluon plasma. The ratio of production cross-sections of ψ(2S) and J/ψ mesons times the ratio of their branching fractions into the dimuon final state is measured as a function of centrality using data collected by the LHCb detector in PbPb collisions at √s_NN = 5.02 TeV. 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.

Discussions

• Measurement of the ψ(2S) to J/ψ cross-section ratio as a function of centrality in PbPb collisions at √s(NN) = 5.02 TeV arxiv.org/abs/2411.05669 - The measured ratio shows no dependence on the collisi [bsky, 11 points, 0 comments]

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