Abstract
ALICE (A Large Ion Collider Experiment) at the LHC performed high statistics measurements in Pb-Pb collisions at the top LHC energy, complemented with large recent reference datasets in elementary proton-proton collisions at the same energy. Elementary pp collisions are serving as baseline for testing QCD properties and allow the study of the changes induced by the hot and dense medium produced in heavy ion collisions. Key observables like nuclear modification factors, jet production, flow phenomena and spectra for identified particles, related to the different stages of collision evolution, are presented and compared with the most recent results from p-Pb and Xe-Xe collisions, thus allowing to probe both initial cold nuclear matter and final state effects, combined with the system size dependence of the measurements.
Highlights
Nuclear collisions at relativistic energies produce a strongly interacting matter under extreme conditions of temperature and energy density
The ALICE detector system and performance are described in detail in [3]
Electron identification is achieved in a Transition Radiation Detector (TRD), while the high momentum neutral particles at midrapidity are identified with ElectroMagnetic Calorimeter (EMCal)
Summary
Nuclear collisions at relativistic energies produce a strongly interacting matter under extreme conditions of temperature and energy density. In these collisions, a deconfined state of quarks and gluons (Quark Gluon Plasma - QGP)[1, 2] is expected to be formed. ALICE detector provide excellent particle identification (PID) for hadrons, leptons and photons over a wide momentum range. Hadron PID is made using TPC, ITS, TOF (Time of Flight detector) and HMPID (High Momentum Particle Identification Detector) detectors. Electron identification is achieved in a Transition Radiation Detector (TRD), while the high momentum neutral particles at midrapidity are identified with ElectroMagnetic Calorimeter (EMCal)
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