Köln 2025 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 3: Heavy-Ion Collisions and QCD Phases I
HK 3.1: Talk
Monday, March 10, 2025, 15:00–15:15, HS 3 Chemie
Performance study of non-prompt J/ψ production in Pb–Pb collisions √sNN=5.36 TeV from ALICE — •yuanjing ji for the ALICE Germany-Collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt
Lattice QCD calculations predict that a strongly-coupled QCD matter, the quark-gluon plasma (QGP), can be formed in relativistic heavy-ion collisions at extremely high temperatures and energy densities. Due to their large masses, heavy quarks (c, b) are predominantly produced in the initial hard scattering process before the hot QCD medium forms. Their final-state dynamics, therefore, encode information about the evolution of the system, making them effective probes of the properties of the hot QCD medium. In high-energy hadronic collisions, inclusive J/ψ production consists of both prompt and non-prompt components. The prompt component includes J/ψ produced directly or from the decays of higher-mass charmonium states (e.g., ψ(2S) or χc), while the non-prompt component originates from the weak decays of beauty hadrons. Therefore, the study of the production and properties of non-prompt J/ψ would provide valuable insights into those of the beauty hadrons.
The Time Projection Chamber and Inner Tracking System of the ALICE detector were recently upgraded, allowing a ∼50 times increase in read-out rate in Run3 of the Large Hadron Collider (LHC). In this talk, we will present the performance of the prompt and non-prompt J/ψ measurements in Pb–Pb collisions at √sNN=5.36 GeV in ALICE during LHC Run3.
Keywords: Quark Gluon Plasma; Non-prompt J/psi; Beauty Hadrons; Heavy flavor; Charmonium