Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 26: Schwerionenkollisionen und QCD Phasen

HK 26.5: Vortrag

Dienstag, 18. März 2014, 17:45–18:00, HZ 6

Event-by-Event Particle Multiplicity Fluctuations in Pb-Pb collisions with ALICE — •Mesut Arslandok for the ALICE collaboration — Institut für Kernphysik, Goethe-Universität Frankfurt

The study of event-by-event fluctuations of identified hadrons may reveal the degrees of freedom of the strongly interacting mater created in heavy-ion collisions. Particle identification that is based on the measurement of the specific ionization energy loss dE/dx works well on a statistical basis, however, suffers from ambiguities when applied on the event-by-event level. A novel experimental technique called the "Identity Method" was recently proposed to overcome such limitations. The method follows a probabilistic approach using the inclusive dE/dx distributions measured in the ALICE TPC, and determines the moments of the multiplicity distributions by an unfolding procedure. In this contribution, the status of an event-by-event fluctuation analysis that applies the Identity Method to Pb-Pb data from ALICE will be presented.
Supported by BMBF and the Helmholtz Association.