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The Multi-Phase Transport model (AMPT) is used to investigate the longitudinal broadening of the transverse momentum two-particle correlator $C_{2}\left(\Delta\eta,\Delta\varphi\right)$, and its utility to extract the specific shear…

Nuclear Theory · Physics 2021-08-04 Niseem Magdy , Roy A. Lacey

We apply a multi-phase transport (AMPT) model to study two-particle angular correlations in $pp$ collisions at $\sqrt{s}= 7$ TeV. Besides being able to describe the angular correlation functions of meson-meson pairs, a large improvement for…

Nuclear Theory · Physics 2018-09-26 Liuyao Zhang , Jinhui Chen , Ziwei Lin , Yugang Ma , Song Zhang

The energy-loss of hard probes within the hot and dense medium of a quark gluon plasma (QGP) can be described by theoretical models based on radiative energy loss as well as combinations of collisional and radiative energy loss. In a search…

High Energy Physics - Phenomenology · Physics 2018-12-27 Martin Rohrmoser , Pol Gossiaux , Thierry Gousset , Joerg Aichelin , Iurii Karpenko

Dihadron azimuthal correlations in Au+Au collisions at $\sqrt{S_{NN}}$=200 GeV have been explored by using a multi-phase transport (AMPT) model. In order to obtain the contributions from jet-medium interactions, the combined harmonic flow…

Nuclear Theory · Physics 2013-09-27 Yu-hui Zhu , Y. G. Ma , J. H. Chen , G. L. Ma , S. Zhang , C. Zhong

We describe in detail how the different components of a multi-phase transport (AMPT) model, that uses the Heavy Ion Jet Interaction Generator (HIJING) for generating the initial conditions, Zhang's Parton Cascade (ZPC) for modeling partonic…

Nuclear Theory · Physics 2008-11-26 Zi-Wei Lin , Che Ming Ko , Bao-An Li , Bin Zhang , Subrata Pal

Methodology is presented for analysis of three-particle correlation functions obtained in heavy ion collisions at ultra-relativistic energies. We show that harmonic correlations can be removed and jet driven correlations reliably extracted.…

Nuclear Experiment · Physics 2009-11-24 N. N. Ajitanand , J. M. Alexander , Roy A. Lacey , A. Taranenko

A precise quantification of the medium-modification of the high transverse momenta jets in relativistic heavy ion collisions rely on consistent modelling of elastic and inelastic energy loss suffered by the jet and the concurrent underlying…

Nuclear Theory · Physics 2025-05-06 Monideepa Maity , Subrata Pal

Hard-jet correlations probe parton energy loss and the microscopic structure of the quark-gluon plasma formed in ultra-relativistic heavy-ion collisions. The correlation of high-$p_\mathrm{T}$ jets with other jets, hadrons, or electroweak…

Nuclear Experiment · Physics 2025-05-02 Riccardo Longo

Angular correlation studies provide powerful insight into the energy loss of hard scattered partons as they traverse the partonic medium produced in heavy ion collisions at RHIC. These results are generally compared to jet correlations in…

Nuclear Experiment · Physics 2010-05-11 J. A. Hanks

We have obtained a new set of parameters in a multiphase transport (AMPT) model that are able to describe both the charged particle multiplicity density and elliptic flow measured in Au+Au collisions at center of mass energy…

Nuclear Theory · Physics 2011-07-21 Jun Xu , Che Ming Ko

In two-particle angular correlation measurements the distribution of charged hadron pairs are evaluated as a function of pseudorapidity ($\Delta \eta$) and azimuthal ($\Delta \varphi$) differences. In these correlations, jets manifest…

High Energy Physics - Phenomenology · Physics 2019-04-02 Balázs Endre Szigeti , Monika Varga-Kofarago

A Linear Boltzmann Transport (LBT) Monte Carlo model has been developed to describe jet propagation and interaction with the quark-gluon plasma (QGP) in relativistic heavy-ion collisions. A complete set of elastic scattering processes and…

Nuclear Theory · Physics 2024-04-02 Tan Luo , Yayun He , Shanshan Cao , Xin-Nian Wang

A Linearized Boltzmann Transport (LBT) model coupled with hydrodynamical background is established to describe the evolution of jet shower partons and medium excitations in high energy heavy-ion collisions. We extend the LBT model to…

Nuclear Theory · Physics 2016-07-27 Shanshan Cao , Tan Luo , Guang-You Qin , Xin-Nian Wang

The quark-gluon plasma produced in heavy-ion collisions is anisotropic throughout its evolution. This anisotropy changes the physics of jet-medium interaction, making it dependent on the momentum direction of the jet. In this paper we…

High Energy Physics - Phenomenology · Physics 2022-02-09 Sigtryggur Hauksson , Sangyong Jeon , Charles Gale

A Linear Boltzmann Transport (LBT) model has been developed for the study of jet propagation inside a quark-gluon plasma. Both leading and thermal recoiled partons are transported according to the Boltzmann equations to account for…

Nuclear Theory · Physics 2015-06-15 Tan Luo , Yayun He , Xin-Nian Wang , Yan Zhu

A multi-phase transport (AMPT) model has been successful in explaining a wide range of observables in relativistic heavy ion collisions. In this work, we implement a modern set of free proton parton distribution functions and an impact…

Nuclear Theory · Physics 2019-07-03 Chao Zhang , Liang Zheng , Feng Liu , Shusu Shi , Zi-Wei Lin

We show that the incoherent elastic scattering of partons, as present in a multi-phase transport model (AMPT), with a modest parton-parton cross-section of $\sigma=1.5 - 3$ mb, naturally explains the long-range two-particle azimuthal…

High Energy Physics - Phenomenology · Physics 2014-11-14 Guo-Liang Ma , Adam Bzdak

Two-dimensional (2D) jet tomography is a promising tool to study jet medium modification in high-energy heavy-ion collisions. It combines gradient (transverse) and longitudinal jet tomography for selection of events with localized initial…

High Energy Physics - Phenomenology · Physics 2024-02-02 Yu-Xin Xiao , Yayun He , Long-Gang Pang , Hanzhong Zhang , Xin-Nian Wang

Two-particle correlations obtained from parton showers that pass the hot and dense medium of the quark gluon plasma (QGP) can be used as an alternative observable, in addition to the combination of the nuclear modification factor $R_{AA}$…

High Energy Physics - Phenomenology · Physics 2017-03-08 Martin Rohrmoser , Pol Bernard Gossiaux , Thierry Gousset , Jörg Aichelin

Advancements in full jet reconstruction have made it possible to use jets as triggers in azimuthal angular correlations to study the modification of hard-scattered partons in the medium created in ultrarelativistic heavy-ion collisions.…

Nuclear Experiment · Physics 2019-08-13 Alice Ohlson
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