Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 53: Heavy Ion Collisions and QCD Phases 6
HK 53.2: Vortrag
Donnerstag, 26. März 2015, 15:00–15:15, T/HS1
Anti-Alpha production in √sNN = 2.76 TeV Pb–Pb collisions with ALICE at the LHC — •Nicole Löher for the ALICE collaboration — Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum fürSchwerionenforschung, Planckstraße 1, 64291 Darmstadt — Institut für Kernphysik, Technische Universität Darmstadt, Schlossgrabenstr. 9, 64289 Darmstadt
ALICE is the experiment at the CERN LHC dedicated to the investigation of nucleus–nucleus collisions at the highest energies ever reached in the laboratory. The excellent particle identification capabilities allow for the measurement of many particle species, spanning a wide range in mass, from the light electrons to the heavy 4 He nuclei. In this talk we present results from a sample of Pb–Pb collisions at √sNN = 2.76 TeV. The anti-alpha is the heaviest anti-nucleus observed up to now. These particles have been identified based on their specific energy loss in the Time Projection Chamber and the velocity information from the Time-Of-Flight detector. The production yield d N /d y is presented and the result is compared with thermal model calculations.