Enhanced production of strange baryons in high energy nuclear collisions from a multiphase transport model

Abstract

We introduce additional coalescence factors for the production of strange baryons in a multiphase transport (AMPT) model in order to describe the enhanced production of multistrange hadrons observed in Pb-Pb collisions at $\sqrt{{\mathrm{s}}_{\mathrm{NN}}}$ = 2.76 TeV at the Large hadron Collider (LHC) and Au+Au collisions at $\sqrt{{\mathrm{s}}_{\mathrm{NN}}}$ = 200 GeV at Relativistic Heavy-Ion Collider (RHIC).This extended AMPT model is found to also give a reasonable description of the multiplicity dependence of the strangeness enhancement observed in high multiplicity events in $pp$ collisions at $\sqrt{\mathrm{s}}$ = 7 TeV and $p$-Pb collisions at $\sqrt{{\mathrm{s}}_{\mathrm{NN}}}$ = 5.02 TeV. We find that the coalescence factors depend on the system size but not much on whether the system is produced from A+A or p+A collisions. The extended AMPT model thus provides a convenient way to model the mechanism underlying the observed strangeness enhancement in collisions of both small and large systems at RHIC and LHC energies.

15 pages, 5 figures

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Cited by in corpus (12)

• Further developments of a multi-phase transport model for relativistic nuclear collisions
• Production of exotic hadrons in $pp$ and nuclear collisions
• Investigating high energy proton proton collisions with a multi-phase transport model approach based on PYTHIA8 initial conditions
• Implication of two-baryon azimuthal correlations in $pp$ collisions at LHC energies on the QGP
• Production of light antinuclei in $pp$ collisions by dynamical coalescence and their fluxes in cosmic rays near earth
• Multiplicity dependence of (multi)strange hadrons in oxygen-oxygen collisions at $\sqrt{s_{\mathrm{NN}}}=7$ TeV using EPOS4 and AMPT
• Probing fluctuations and correlations of strangeness by net-kaon cumulants in Au+Au collisions at $\sqrt{s_{NN}}=7.7$ GeV
• Two-pion interferometry for partially coherent sources in relativistic heavy-ion collisions in a multi-phase transport model
• Study of strange quark density fluctuations in Au+Au Collisions at $\sqrt{s_{NN}}$ = 7.7-200 GeV from AMPT Model
• Multiboson Hanbury Brown-Twiss correlations for partially coherent sources in relativistic heavy-ion collisions in a multiphase transport model
• Investigating jet induced identified hadron productions from the relative transverse activity classifier in pp collision at LHC
• Apparent strangeness enhancement from multiplicity selection in high energy proton-proton collisions