Dynamics of particle production in Pb--Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV using PYTHIA8 Angantyr model

Abstract

We study the dynamics of identified, strange, and multi-strange particle production in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV using the recently developed Angantyr model, incorporated within PYTHIA8. We show the interplay between multi-parton interactions (MPI) and color reconnection (CR) on the experimentally measured quantities. The charged-particle multiplicity ($N_{\mathrm{ch}}$) and mean transverse momentum ($⟨p_{\mathrm{T}}⟩$) distributions are well explained by PYTHIA8 Angantyr with proper tuning, as presented in this paper. Predictions of $p_{\mathrm{T}}$ spectra, $⟨p_{\mathrm{T}}⟩$, $p_{\mathrm{T}}$ integrated yields of the identified, strange and multi-strange 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 CR and MPI mimic signs of collectivity and is possibly one of the suitable candidates to study ultra-relativistic heavy-ion collisions.

arXiv comment11 pages, 10 figures

References in corpus (36)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• The PHOBOS Perspective on Discoveries at RHIC
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Glauber Modeling in High Energy Nuclear Collisions
• Radial and elliptic flow at RHIC: further predictions
• Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV
• Heavy Ion Collisions: The Big Picture, and the Big Questions
• Flow at the SPS and RHIC as a Quark Gluon Plasma Signature
• Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions
• Azimuthal anisotropy in Au+Au collisions at sqrtsNN = 200 GeV
• Centrality dependence of charged particle production at large transverse momentum in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• K${}_{\mathrm{S}}^0$ and $\mathrm{\Lambda }$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Production of charged pions, kaons and protons at large transverse momenta in pp and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• The Tsallis Distribution in Proton-Proton Collisions at $\sqrt{s}$ = 0.9 TeV at the LHC
• Relativistic Thermodynamics: Transverse Momentum Distributions in High-Energy Physics
• Color reconnection and flow-like patterns in pp collisions
• The Angantyr model for Heavy-Ion Collisions in PYTHIA8
• Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC
• QCD phase structure from functional methods
• Jets, Bulk Matter, and their Interaction in Heavy Ion Collisions at Several TeV
• Strangeness Enhancement in Heavy Ion Collisions - Evidence for Quark-Gluon-Matter ?
• A hybrid model approach for strange and multi-strange hadrons in 2.76 A TeV Pb+Pb collisions
• Elucidating the multiplicity dependence of J/$\psi$ production in proton-proton collisions with PYTHIA8
• Heavy Ions at LHC: Theoretical Issues
• Probing the States of Matter in QCD
• Strangeness enhancement in heavy ion collisions
• Measurement of ISR-FSR interference in the processes e+ e- --> mu+ mu- gamma and e+ e- --> pi+ pi- gamma
• The Lund Fragmentation Process for a Multi-gluon String According to the Area Law
• QCD Phase-transition and chemical freezeout in nonzero magnetic field at NICA
• Phenomenology of Strangeness enhancement in heavy ion collisions
• The energy density representation of the strangeness enhancement from p+p to Pb+Pb
• Baseline study for net-proton number fluctuations at top energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider with the Angantyr model
• Coherence effects between the initial and final state radiation in a dense QCD medium

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• Centrality Dependence of the Balance Functions for Identified Particles in Pb--Pb Collisions Using Pythia + Angantyr