Abstract
In these proceedings an overview of the main ALICE results on soft probes of the Quark-Gluon Plasma (QGP) in Pb–Pb collisions at sNN=2.76 TeV is presented. It comprises measurements of light flavour hadron production, azimuthal flow, and system size. All of the results are compared to hydrodynamical calculations to extract global properties of the QGP. In addition, particle production is also compared to results from statistical models. In order to show the evolution of soft probes with system size, some of the measurements from pp and p–Pb collisions are compared to those from Pb–Pb collisions.
Highlights
The main goal of the heavy-ion program at the Large Hadron Collider (LHC) is to study properties of the Quark-Gluon Plasma (QGP), a state of deconfined quarks and gluons
In order to show the evolution of soft probes with system size, some of the measurements from pp and p–Pb collisions are compared to those from Pb–Pb collisions
During those periods the Inner Tracking System (ITS) and the Time Projection Chamber (TPC) were the main detectors used for reconstructing of charged particle tracks and measuring their momenta in the pseudorapidity range |η| < 0.9
Summary
The main goal of the heavy-ion program at the Large Hadron Collider (LHC) is to study properties of the Quark-Gluon Plasma (QGP), a state of deconfined quarks and gluons. The initial shape and energy density of the system are given by the overlapping region of the two Lorentz contracted colliding nuclei This results in an initial spatial anisotropy which is transformed during the evolution into an anisotropy in the momentum distribution of the produced particles. In the highest multiplicity class of p–Pb collisions at the LHC, the pseudorapidity density of produced particles is comparable to peripheral heavy-ion collisions. This opens up the possibility to have collective phenomena developing in p–Pb collisions, which could have similar signatures as in heavy-ion collisions. Chojnacki / Nuclear and Particle Physics Proceedings 273–275 (2016) 1553–1558
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