4. Nuclear Physics (CSN3)

Identified hadron production and study of collectivity phenomena in small system at the LHC with ALICE.

by Yasser Corrales Morales (TO)

Aula Seminari (LNF INFN)

Aula Seminari


Heavy-ion collisions offer a unique possibility to explore in the laboratory the hot and dense deconfined phase of strongly-interacting matter: the Quark Gluon Plasma (QGP). In this context, measurements performed in smaller systems, such as proton--proton and proton--nucleus collisions, provide the reference data for the interpretation of the heavy-ion collision results. However, measurements obtained in high-multiplicity \pp{} and \pPb{} collisions at the LHC have exhibited features that are similar to what was observed in \PbPb{} collisions, where they are usually interpreted as signs of collective behaviour. These observations warrant a comprehensive study of the production of identified particles which are important probes to investigate the dynamics of the small systems. Thanks to the excellent particle identification performance of the ALICE detector the measurement of identified particles is possible over a wide range of transverse momentum ($\pt{}$). In order to discuss the similarities between the different collision systems, the results obtained in \pp{}, \pPb{} and \PbPb{} collisions will be reviewed.