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arXiv · 2012.10037

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

Tianhao Shao·Jinhui Chen·Che Ming Ko·Zi-Wei Lin
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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 $\rm \sqrt{s_{NN}}$ = 2.76 TeV at the Large hadron Collider (LHC) and Au+Au collisions at $\rm \sqrt{s_{NN}}$ = 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 $\rm \sqrt{s}$ = 7 TeV and $p$-Pb collisions at $\rm \sqrt{s_{NN}}$ = 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.

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Tianhao Shao, Jinhui Chen, Che Ming Ko, Zi-Wei Lin. 2020-12-18. Enhanced production of strange baryons in high energy nuclear collisions from a multiphase transport model. https://doi.org/10.1103/physrevc.102.014906

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