Dresden 2013 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 39: Schwerionenkollisionen und QCD Phasen
HK 39.5: Talk
Tuesday, March 5, 2013, 18:00–18:15, HSZ-201
Average pT in pp, Pb–Pb and p–Pb collisions with ALICE — •Marco Marquard and Philipp Luettig — Institut für Kernphysik, Goethe Universität Frankfurt am Main, Germany
Since the first collisions in 2009 the ALICE detector at CERN-LHC has measured pp, Pb–Pb and most recently p–Pb collisions at different energies. For all collision systems the transverse momentum spectra of unidentified charged particles have been measured over a wide momentum range with the two innermost detector systems (ITS and TPC) of the experiment. This allows to determine a characteristic quantity of the spectra, the average pT (⟨pT ⟩), with small systematic uncertainties. ⟨pT ⟩ provides a possibility to compare reference spectra (pp) with the spectra of the initial (p–Pb) and final state (Pb–Pb) reaction systems in a systematic way. In this talk the comparison of ⟨pT ⟩ as a function of the event multiplicity for the different collisions systems, measured with ALICE, will be presented.