Investigating high energy proton proton collisions with a multi-phase transport model approach based on PYTHIA8 initial conditions

Abstract

The striking resemblance of high multiplicity proton-proton (pp) collisions at the LHC to heavy ion collisions challenges our conventional wisdom on the formation of the Quark-Gluon Plasma (QGP). A consistent explanation of the collectivity phenomena in pp will help us to understand the mechanism that leads to the QGP-like signals in small systems. In this study, we introduce a transport model approach connecting the initial conditions provided by PYTHIA8 with subsequent AMPT rescatterings to study the collective behavior in high energy pp collisions. The multiplicity dependence of light hadron productions from this model is in reasonable agreement with the pp $\sqrt{s}=13$ TeV experimental data. It is found in the comparisons that both the partonic and hadronic final state interactions are important for the generation of the radial flow feature of the pp transverse momentum spectra. The study also shows that the long range two particle azimuthal correlation in high multiplicity pp events is sensitive to the proton sub-nucleon spatial fluctuations.

References in corpus (12)

• PYTHIA 6.4 Physics and Manual
• An Introduction to PYTHIA 8.2
• Elliptic and triangular flow in p+Pb and peripheral Pb+Pb collisions from parton scatterings
• Imprints of fluctuating proton shapes on flow in proton-lead collisions at the LHC
• Eccentric protons? Sensitivity of flow to system size and shape in p+p, p+Pb and Pb+Pb collisions
• Evidence for BFKL and saturation dynamics from di-hadron spectra at the LHC
• Mass ordering of spectra from fragmentation of saturated gluon states in high multiplicity proton-proton collisions
• Initial condition for hydrodynamics, partonic free streaming, and the uniform description of soft observables at RHIC
• Long-range azimuthal correlations in proton-proton and proton-nucleus collisions from the incoherent scattering of partons
• Diffractive and non-diffractive wounded nucleons and final states in pA collisions
• Unified description of hadron yield ratios from dynamical core-corona initialization
• Enhanced production of strange baryons in high energy nuclear collisions from a multiphase transport model

Cited by in corpus (9)

• Further developments of a multi-phase transport model for relativistic nuclear collisions
• Implication of two-baryon azimuthal correlations in $pp$ collisions at LHC energies on the QGP
• The universal scaling of kinetic freeze-out parameters across different collision systems at the LHC energy
• Disentangling the development of collective flow in high energy proton proton collisions with a multiphase transport model
• Investigating the pion emission source in pp collisions using the AMPT model with sub-nucleon structure
• Disentangling effects of nucleon size and nucleus structure in relativistic heavy-ion collisions
• Investigating jet induced identified hadron productions from the relative transverse activity classifier in pp collision at LHC
• Studies of beauty hadron and non-prompt charm hadron production in pp collisions at $\sqrt{s}$=13 TeV within a transport model approach
• A comparison study of collisions at relativistic energies involving light nuclei