(TIFR-NISER Discussion session) Mr. Sourav Kundu [Multiplicity dependence of resonance production in high energy collisions at LHC]

by Sourav Kundu

Thursday 27 Feb 2020, 11:30 → 12:30 Asia/Kolkata

A 304

Hadronic resonances with different lifetimes are very useful to probe the different phases of heavyion collisions. Due to their short lifetimes, resonances are good candidates to investigate the interplay between particle re-scattering and regeneration in the hadronic phase. Due to different masses and quark content, hadronic resonances carry a wealth of information on different aspects of hadron collisions, including the processes that determine the shapes of particle momentum spectra, strangeness production, and the possible onset of collective effects in small systems. Recent measurements of light-flavor hadron production in high-energy hadronic collisions by ALICE have revealed that different collisional systems have similar features when compared at the similar charged particle multiplicity and that even in pp collisions the multiplicity dependence is significant. We here present the latest results on r(770)0, K*(892)0, f0(980), f(1020), Σ(1385)±, Λ(1520), Ξ(1530)0 and Ξ(1820) production as a function of charged particle mutiplicity in pp, p-Pb, Pb-Pb and Xe-Xe collisions at different energies. Results include system-size and collision-energy evolution of transverse momentum spectra, integrated yields, mean transverse momenta, particle ratios and nuclear modification factor. These results will be compared to measurements from lower energy and theoretical model predictions.