Münster 2017 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 30: Heavy Ion Collisions and QCD Phases VII
HK 30.8: Vortrag
Mittwoch, 29. März 2017, 18:45–19:00, F 3
Studies of ⟨ pT ⟩ vs. Nch in pp collisions at √s = 5.02 TeV with ALICE — •Mario Krüger for the ALICE collaboration — Institut für Kernphysik, Goethe-Universität Frankfurt
The ALICE experiment at CERN-LHC is designed to study the properties of a hot, deconfined QCD matter, the so called Quark-Gluon Plasma, which is created in ultrarelativistic heavy-ion collisions. This study is complemented by measurements in proton-proton and proton-lead collisions as a reference. In proton-proton collisions one can especially investigate effects of multiple-parton interactions and hadronization beyond independent string fragmentation.
The transverse-momentum spectra of particles produced in the collisions can be characterized by their mean-value ⟨ pT ⟩ and variance σ as a function of event multiplicity. Due to detector effects, the measured multiplicities differ from the actual particle multiplicities Nch.
In this talk, we use a Bayesian unfolding procedure
exploiting the correlation between measured and true multiplicities known from MC simulations.
We present ⟨ pT ⟩ and σ of inclusive charged particles as a function of the multiplicity Nch in pp collisions at √s = 5.02 TeV within a pseudorapidity range of |η| < 0.8 .
Supported by BMBF and the Helmholtz Association.