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Using a partonic transport model based on the 3-flavor Nambu-Jona-Lasinio model and a relativistic hadronic transport model to describe, respectively, the evolution of the initial partonic and the final hadronic phase of heavy-ion…

Nuclear Theory · Physics 2014-01-15 Jun Xu , Taesoo Song , Che Ming Ko , Feng Li

The elliptic flow splitting between particles and their antiparticles has recently been observed by the STAR Collaboration in the beam-energy scan program at the Relativistic Heavy Ion Collider. In studies based on transport models, we have…

Nuclear Theory · Physics 2016-10-12 Jun Xu , Che Ming Ko , Feng Li , Taesoo Song , He Liu

Heavy quarks are a unique probe to study the medium produced in ultra-relativistic heavy ion collisions. Within the partonic transport model Boltzmann approach to multi-parton scatterings (BAMPS) the production, energy loss and elliptic…

High Energy Physics - Phenomenology · Physics 2012-04-20 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

The space-time propagation of heavy quarks in ultra-relativistic heavy ion collisions is studied within the partonic transport model Boltzmann Approach of MultiParton Scatterings (BAMPS). In this model heavy quarks interact with the…

High Energy Physics - Phenomenology · Physics 2011-08-25 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

Based on the framework of an extended multiphase transport model with mean-field potentials in both the partonic phase and the hadronic phase, we explain the elliptic flow difference between $\pi^+$ and $\pi^-$ in the beam-energy scan…

Nuclear Theory · Physics 2019-10-18 He Liu , Feng-Tao Wang , Kai-Jia Sun , Jun Xu , Che Ming Ko

We present fully dynamic simulations of heavy ion collisions at RHIC energies within the perturbative QCD-based partonic transport model BAMPS, focusing on the simultaneous investigation of jet-quenching and elliptic flow. The model…

High Energy Physics - Phenomenology · Physics 2011-10-06 Oliver Fochler , Zhe Xu , Carsten Greiner

Using a partonic transport model based on the Nambu-Jona-Lasinio model, we study the effect of scalar and vector mean fields on the elliptic flows of quarks and antiquarks in relativistic heavy ion collisions in Au+Au collisions at…

Nuclear Theory · Physics 2014-07-17 Taesoo Song , Salvatore Plumari , Vincenzo Greco , Che Ming Ko , Feng Li

The elliptic flow in heavy ion collisions at RHIC is studied in a multiphase transport model. By converting the strings in the high energy density regions into partons, we find that the final elliptic flow is sensitive to the parton…

Nuclear Theory · Physics 2009-11-07 Zi-wei Lin , C. M. Ko

The production and space-time evolution of heavy quarks and J/psi in the quark gluon plasma is studied within the partonic transport model Boltzmann Approach to MultiParton Scatterings (BAMPS). This framework allows interactions among all…

High Energy Physics - Phenomenology · Physics 2015-06-12 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

Heavy ion collisions in the low energy run at Relativistic Heavy Ion Collider (RHIC) and future Facility for Antiproton and Ion Research (FAIR) in Germany are expected to produce a quark-gluon plasma that has a finite baryon chemical…

Nuclear Theory · Physics 2011-03-07 Lie-Wen Chen , Che Ming Ko , Wei Liu , Ben-Wei Zhang

Production, elliptic flow and the nuclear modification factor of charm and bottom quarks are studied in central and non-central heavy-ion collisions at RHIC and LHC using the partonic transport model Boltzmann Approach of MultiParton…

High Energy Physics - Phenomenology · Physics 2011-02-11 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

Production and elliptic flow of heavy quarks are investigated in nucleus-nucleus collisions at RHIC and LHC within the Boltzmann Approach of MultiParton Scatterings (BAMPS). The initial heavy quark yield is estimated with the leading order…

High Energy Physics - Phenomenology · Physics 2014-11-20 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

The quark gluon plasma produced in ultra-relativistic heavy-ion collisions exhibits remarkable features. It behaves like a nearly perfect liquid with a small shear viscosity to entropy density ratio and leads to the quenching of highly…

High Energy Physics - Phenomenology · Physics 2015-03-25 Jan Uphoff , Oliver Fochler , Florian Senzel , Christian Wesp , Zhe Xu , Carsten Greiner

The elliptic flow ($v_{2}$) at $\sqrt{s_{\rm NN}} = $ 11.5, 39, and 200 GeV and triangular flow ($v_{3}$) at $\sqrt{s_{\rm NN}} = $ 200 GeV of identified particles ($\pi^{\pm}, K^{\pm}, K^{0}_{S}, p, \bar{p}, \phi, \Lambda$ and…

Nuclear Experiment · Physics 2015-09-28 Xu Sun , Jianli Liu , Alexander Schmah , Shusu Shi , Jingbo Zhang , Lei Huo , Hanzhi Jiang

Fully dynamic simulations of heavy ion collisions at RHIC and at LHC energies within the perturbative QCD-based partonic transport model BAMPS (Boltzmann Approach to Multi-Parton Scatterings) are presented, focusing on the simultaneous…

High Energy Physics - Phenomenology · Physics 2015-05-28 Oliver Fochler , Jan Uphoff , Zhe Xu , Carsten Greiner

Anisotropic flow of hadronic matter is considered as a sensitive tool to detect the early stage dynamics of high-energy heavy-ion collisions. Taking the event by event fluctuations of the collision geometry into account, the elliptic flow…

Nuclear Theory · Physics 2018-04-17 Soumya Sarkar , Provash Mali , Amitabha Mukhopadhyay

Anisotropic flow is an important observable in the study of the Quark-Gluon Plasma that is expected to be formed in heavy-ion collisions. With a multiphase transport (AMPT) model we investigate the elliptic($\emph{v}_{2}$),…

Nuclear Experiment · Physics 2016-11-23 Zhao Feng , Guang-Ming Huang , Feng Liu

The fluctuations of elliptic flow (\vtwo) in relativistic heavy-ion collisions offer a powerful tool to probe the collective behavior and transport properties of the quark-gluon plasma (QGP). The dependence of these fluctuations on particle…

Nuclear Theory · Physics 2025-12-23 Jie Wan , Chun-Zheng Wang , Yu-Gang Ma , Qi-Ye Shou , Song Zhang

Complete evolution of the strongly interacting matter formed in ultrarelativistic heavy-ion collisions is studied within a coupled Boltzmann and relativistic viscous hydrodynamics approach. For the initial nonequilibrium evolution phase, we…

Nuclear Theory · Physics 2015-07-14 Rajeev S. Bhalerao , Amaresh Jaiswal , Subrata Pal

We studied the number of constituent quark scaling (NCQ) behaviour of elliptic flow ($v_{2}$) under the framework of A Multi-Phase Transport model (AMPT) at both top-RHIC and LHC energies. The NCQ-scaling in $v_{2}$ holds at top-RHIC energy…

Nuclear Experiment · Physics 2016-03-30 Subhash Singha , Md. Nasim
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