Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 41: Schwerionenkollisionen und QCD Phasen

HK 41.5: Vortrag

Donnerstag, 20. März 2014, 15:15–15:30, HZ 6

Dielectron cocktail in pp, p–Pb and Pb–Pb collisions at the LHC — •Irem Erdemir for the ALICE collaboration — Institut für Kernphysik, Goethe Universität Frankfurt

The measurement of dielectrons allows to investigate the properties of strongly interacting matter, in particular the quark-gluon plasma (QGP), which is created in heavy-ion collisions at the LHC. The evolution of the collision can be probed via dielectrons since electrons do not interact strongly and are created during all stages of the collision. One of the interests in dielectron measurements is motivated by possible modifications of the electromagnetic emission spectrum in the QGP, where pp collisions are used as a medium-free reference.
The dielectron spectrum consists of contributions from various processes. In order to estimate contributions of known hadronic sources to the dielectron spectrum, calculated simulations of the so-called hadronic cocktail are performed. We present the status of the dielectron cocktail simulation in the low-mass region for pp, p–Pb and Pb–Pb collisions at LHC energies.
Supported by BMBF and the Helmholtz Association.