Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 17: Hadronenstruktur und -spektroskopie

HK 17.4: Talk

Monday, March 4, 2013, 17:30–17:45, HSZ-204

J/ψ measurements in pp collisions with the ALICE apparatus at the LHC — •Jan Wagner — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

The study of quarkonium production with the ALICE detector is pursued in pp and heavy-ion collisions at the Large Hadron Collider (LHC). J/ψ, a cc vector meson, is a probe of deconfinement expected to be reached in heavy-ion collisions. The measurements in pp collisions provide data to test (perturbative) QCD models of quarkonium production and serve as a reference for measurements in nucleus-nucleus collisions. Results of the J/ψ production cross section in pp collisions at √s=7 TeV will be presented. Measurements of J/ψ polarization at central rapidity and forward rapidities will be discussed.