Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Poster

HK 27.23: Poster

Dienstag, 28. März 2017, 16:45–18:45, F Foyer

Monte Carlo Studies of the Background in Dielectron Measurements with ALICE — •Alexander Michalik — Institut für Kernphysik, Goethe Universität Frankfurt

The major purpose of the ALICE experiment at the LHC is to explore the deconfined strongly interacting matter, the Quark-Gluon Plasma (QGP), that is formed in ultra-relativistic heavy-ion collisions. Since leptons are produced throughout all collision stages and do not experience any strong interactions with the medium, they are an ideal probe to study the properties of the QGP. However, dielectrons are a rare probe and therefore it is crucial to estimate the background of the signal to a high precision. Contributions to this background come from mis-identified hadrons and from electron-positron pairs from conversions in the detector material. In this poster we discuss the correlated and uncorrelated background and show their impact on the subtracted signal facilitating a full Monte Carlo simulation.