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

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.