Darmstadt 2016 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 40: Heavy Ion Collision and QCD Phases IX
HK 40.1: Gruppenbericht
Mittwoch, 16. März 2016, 16:30–17:00, S1/01 A01
J/ψ production in p–Pb collisions with ALICE at the LHC — •Michael Winn for the ALICE collaboration — Physikalisches Institut, Universitaet Heidelberg
Charmonia are a key observable for deconfinement in nucleus–nucleus collisions at LHC energies. Measurements in proton–nucleus collisions and their comparison with proton–proton collision results provide crucial information on nuclear effects which are also present in the absence of the Quark–Gluon Plasma.
Charmonium production has been measured by ALICE in proton–proton, proton–lead and lead–lead collisions down to pT = 0 both via the dielectron decay channel in the central barrel and via the dimuon decay channel in the forward spectrometer.
In this talk, results on inclusive J/ψ production in proton–lead collisions at √sNN = 5.02 TeV at midrapidity as function of transverse momentum, centrality and multiplicity will be shown. Comparisons with results at forward and backward rapidity measured by ALICE and with theoretical models will be carried out. Implications of the results for the interpretation of lead–lead results on charmonium at the LHC as well as further prospects will be discussed.