scholarly journals Improved quark coalescence for a multi-phase transport model

2017 ◽  
Vol 96 (1) ◽  
Author(s):  
Yuncun He ◽  
Zi-Wei Lin
Keyword(s):  
Transport Model ◽  
Quark Coalescence ◽  
Multi Phase ◽  
Phase Transport

HYPERNUCLEUS PRODUCTION AT RHIC AND HIRFL-CSR ENERGY

2010 ◽  
Vol 19 (08n09) ◽  
pp. 1829-1836
Author(s):  
SONG ZHANG ◽  
J. H. CHEN ◽  
Y. G. MA ◽  
Z. B. TANG ◽  
Z. B. XU
Keyword(s):  
Beam Energy ◽  
Transport Model ◽  
Rhic Energy ◽  
Collision System ◽  
Hadronic Phase ◽  
Multi Phase ◽  
Phase Transport

We calculated the hypertriton production at RHIC-STAR and HIRFL-CSR acceptance, with a multi-phase transport model (AMPT) and a relativistic transport model (ART), respectively. In specific, we calculated the Strangeness Population Factor [Formula: see text] at different beam energy. Our results from AGS to RHIC energy indicated that the collision system may change from hadronic phase at AGS energies to partonic phase at RHIC energies. Our calculation at HIRFL-CSR energy supports the proposal to measure hypertriton at HIRFL-CSR.

scholarly journals Rapidity bin multiplicity correlations from a multi-phase transport model

2016 ◽  
Vol 52 (3) ◽  
Author(s):  
Mei-Juan Wang ◽  
Gang Chen ◽  
Yuan-Fang Wu ◽  
Guo-Liang Ma
Keyword(s):  
Transport Model ◽  
Multi Phase ◽  
Phase Transport

scholarly journals Further developments of a multi-phase transport model for relativistic nuclear collisions

2021 ◽  
Vol 32 (10) ◽  
Author(s):  
Zi-Wei Lin ◽  
Liang Zheng
Keyword(s):  
Transport Model ◽  
Dense Matter ◽  
Nuclear Collisions ◽  
Future Developments ◽  
Parton Cascade ◽  
Large Systems ◽  
Relativistic Nuclear Collisions ◽  
Main Components ◽  
Multi Phase ◽  
Phase Transport

AbstractA multi-phase transport (AMPT) model was constructed as a self-contained kinetic theory-based description of relativistic nuclear collisions as it contains four main components: the fluctuating initial condition, a parton cascade, hadronization, and a hadron cascade. Here, we review the main developments after the first public release of the AMPT source code in 2004 and the corresponding publication that described the physics details of the model at that time. We also discuss possible directions for future developments of the AMPT model to better study the properties of the dense matter created in relativistic collisions of small or large systems.

scholarly journals Investigation of the Elliptic Flow Fluctuations of the Identified Particles Using the a Multi-Phase Transport Model

Universe ◽  
2020 ◽  
Vol 6 (9) ◽  
pp. 146
Author(s):  
Niseem Magdy ◽  
Xu Sun ◽  
Zhenyu Ye ◽  
Olga Evdokimov ◽  
Roy Lacey
Keyword(s):  
Transverse Momentum ◽  
Transport Model ◽  
Elliptic Flow ◽  
Momentum Dependence ◽  
Event Plane ◽  
First Order ◽  
Flow Fluctuations ◽  
Multi Phase ◽  
Phase Transport ◽  
Participant Plane

A Multi-Phase Transport (AMPT) model is used to study the elliptic flow fluctuations of identified particles using participant and spectator event planes. The elliptic flow measured using the first order spectator event plane is expected to give the elliptic flow relative to the true reaction plane which suppresses the flow fluctuations. However, the elliptic flow measured using the second-order participant plane is expected to capture the elliptic flow fluctuations. Our study shows that the first order spectator event plane could be used to study the elliptic flow fluctuations of the identified particles in the AMPT model. The elliptic flow fluctuations magnitude shows weak particle species dependence and transverse momentum dependence. Such observation will have important implications for understanding the source of the elliptic flow fluctuations.

scholarly journals Baryon spectra and antiparticle-to-particle ratios from the improved AMPT model

2018 ◽  
Vol 171 ◽  
pp. 14004 ◽  
Author(s):  
Yuncun He ◽  
Zi-Wei Lin
Keyword(s):  
Experimental Data ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Current Version ◽  
Ion Collisions ◽  
Particle Ratios ◽  
Quark Coalescence ◽  
Baryon Spectra ◽  
Multi Phase ◽  
Phase Transport

The current version of a multi-phase transport (AMPT) model with string melting can reasonably describe the dN/dy yields, pT spectra and anisotropic flows of pions and kaons at low pT in heavy ion collisions at RHIC and LHC energies, although it failed to reproduce the dN/dy and pT spectra of baryons. In this work, we improve the quark coalescence mechanism in AMPT by removing the forced separate number conservations of mesons, baryons and antibaryons in each event. We find that the improved AMPT model can better describe the yields at midrapidity, the pT spectra and elliptic flow of low-pT baryons in comparison with the experimental data. Antiparticle-to-particle ratios of strange baryons are also significantly improved.

scholarly journals Pseudorapidity dependence of short-range correlations from a multi-phase transport model

2016 ◽  
Vol 40 (3) ◽  
pp. 034105
Author(s):  
Mei-Juan Wang ◽  
Gang Chen ◽  
Guo-Liang Ma ◽  
Yuan-Fang Wu
Keyword(s):  
Short Range ◽  
Transport Model ◽  
Multi Phase ◽  
Phase Transport ◽  
Short Range Correlations
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