Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 33: Schwerionenkollisionen und QCD Phasen
HK 33.2: Vortrag
Mittwoch, 19. März 2014, 17:00–17:15, HZ 6
Dielectron production in pp collisions at √s=7 TeV with ALICE at the LHC — •Markus K. Köhler 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
Dileptons provide an important probe for the medium, which can be created in heavy-ion collisons. Thereby,
proton-proton collisions are crucial as a reference measurement.
We will present the latest results on the dielectron analysis in minimum-bias proton-proton collisons at
√s=7 TeV with the ALICE detector system at the LHC, CERN. The results
will be compared to the expected hadronic sources. This measurement provides also the possibility to extract the total charm cross section and the yield of direct photons.
Moreover, first results for a high-pt dielectron analysis with events triggered using the electromagnetic calorimeter will be shown.