Heidelberg 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 75: Heavy Ion Collisions and QCD Phases 12
HK 75.1: Gruppenbericht
Freitag, 27. März 2015, 14:30–15:00, T/SR25
Experimental tests of the QCD symmetries with heavy-ion collisions — •Jacobus Onderwaater for the ALICE collaboration — Research Division and ExtreMe Matter Institute, GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt — Institut für Kernphysik, Technische Universität Darmstadt, Schlossgrabenstr. 9, 64289 Darmstadt
Not long after the discovery of parity violation in weak interactions it was realized that parity violation is not prohibited in strong interactions. Although experimental results put a very small upper limit on the amount of global parity violation, no such strong restrictions exist on spontaneous occurance of local parity symmetry breaking interactions in the QCD vacuum. It was suggested that local parity violating interactions in combination with the strong magnetic field in a heavy-ion collision may result in novel phenomena like the Chiral Magnetic Effect and the Chiral Separation Effect that survive during the evolution of the hot and dense medium and can be observed via charge-dependent correlations. Charge-dependent effects are observed at RHIC and LHC but may contain contributions from different sources, such as local charge conservation.
In this report an overview of recent charge-dependent measurements with the ALICE detector is presented. Two particle correlations with respect to the event plane with one identified hadron, and two- and three-particles correlations with unidentified hadrons from Pb-Pb at √sNN = 2.76 TeV are discussed.