Year: 2026
Type: conference-paper
Abstract: Quarkonium production is a powerful probe of heavy-quark interactions with nuclear matter, and one of the proposed observables for this purpose is the ψ(2S)-to-J/ψ cross-section ratio. LHCb has recently measured this ratio in Run 2 data as a function of multiplicity in pp and pPb collisions, and as a function of centrality in PbPb collisions. Results in pp and forward pPb show a multiplicity dependence consistent with co-movers, while backward Pbp is flat. The cross-section ratio in PbPb is in agreement with previous results and best described by the TAMU transport model. With its Run 3 upgrades, including the SMOG2 fixed-target system, LHCb can now perform higher-precision PbPb studies, explore new collision systems, and thereby improve our understanding of the medium created in heavy-ion collisions.
DOI: 10.22323/1.485.0193
Author: Lidia Carcedo Salgado
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7119644358
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