Dynamics of particle production in Pb-Pb collisions at sNN =2.76 TeV using the PYTHIA8 Angantyr model

Abstract

We study the dynamics of identified, strange, and multistrange particle production in Pb-Pb collisions at sNN = 2.76 TeV using the recently developed Angantyr model, incorporated within pythia8. We show the interplay between multiparton interactions (MPIs) and color reconnection (CR) on the experimentally measured quantities. We also investigate the role of string shoving within the rope hadronization framework and its impact in particle production. The charged-particle multiplicity (Nch) and mean transverse momentum ((pT)) distributions are well explained by pythia8 Angantyr with proper tuning, as presented in this paper. Predictions of pT spectra, (pT), and pT integrated yields of the identified, strange, and multistrange particles are studied. To provide insight into the collective nature of the produced particles, we look into the ratio of particle yields to pions and kaons. pythia8 Angantyr with MPI+CR and hadronization via string shoving is seen to mimic signs of collectivity due to different implementations in string interactions. © 2022 American Physical Society.