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München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 11: Heavy-Ion Collisions and QCD Phases II

HK 11.1: Gruppenbericht

Montag, 18. März 2019, 16:30–17:00, HS 15

J/ψ measurements at mid-rapidity with ALICE at the LHC — •Markus K. Köhler for the ALICE collaboration — Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Germany

The charmonium state J/ψ is a fruitful and intriguing probe to investigate the evolution of strongly interacting matter in heavy-ion collisions. The production of charm-quark pairs and their hadronisation are well separated in the space-time evolution of the collision and provide a wealth of information of the underlying QCD dynamics from the dense to the eventually dilute system.

The ALICE detector system can measure J/ψ production at mid- and forward rapidity down to zero pT. In this contribution, recent results on J/ψ production are shown with the focus being placed on measurements at mid-rapidity in pp and PbPb collisions at a centre-of-mass energy of 5.02 TeV per nucleon pair collected in LHC run2. J/ψ production as a function of rapidity, transverse momentum and- for the case of PbPb collisions- centrality are presented and compared with available model calculations.

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