2018/06/20 by N. Jacazio, Jacazio, Nicolò
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1806.07617
openalex publication_date 2018/06/20 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
During the LHC Run-2, ALICE has collected data from Pb-Pb collisions at √s_\rmNN = 5.02 TeV. The centrality dependence of identified particle production, including elliptic (v2) and higher harmonic flow coefficients (v3,v4), has been measured. The high-precision measurement of transverse momentum (p\rm T) differential elliptic flow of the ϕ-meson (whose mass is close to that of the proton) allows for a unique testing of mass ordering at low p\rm T as well as baryon and meson grouping at intermediate p\rm T. The p\rm T-differential hadron spectra are presented and, together with flow coefficients, compared with state-of-the-art calculations from models based on relativistic hydrodynamics coupled with UrQMD. The added transport code is to describe rescattering in the hadronic phase, which has been successful in describing the p\rm T-spectra of identified particles up to a few GeV/c. Moreover, results from the simultaneous Blast-Wave fit to the p\rm T distributions are compared across multiple collisions energies and system sizes in order to address the evolution of collective behaviour from small systems to large systems.