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Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Poster

HK 46.14: Poster

Donnerstag, 20. März 2014, 16:00–18:00, HZ Poster

study of the η meson in Pb-Pb collisions at sNN=2.76 TeV using the photon conversion method with ALICE — •Lucia Leardini — Physikalisches Institut, Heidelberg, Germany

The π0 and η mesons are probes for studying the energy loss of the particles traveling through the hot and dense medium that forms after heavy-ions collisions, the Quark Gluon Plasma. Moreover, the study of the π0 and η mesons in Pb-Pb collisions gives us an important reference with which to approach the direct photon measurement since they constitute its most important background.

The analysis is carried out using the Photon Conversion Method which exploits the ALICE Inner Tracking System (ITS) and the Time Projection Chamber (TPC) and makes possible measurements at low pT with large significance. The data analyzed have been gathered during the 2011 and have a statistics eight times larger than the 2010 data. With the large statistics of the 2011 data it will be possible to measure the differential invariant cross section of the η meson as function of the transverse momentum up to a pT of about 10 GeV/c in different centrality classes.

The results of the π0 and η mesons from the 2011 data with the Photon Conversion Method with the ALICE detector will be presented.

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