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Transport and Langevin equations are employed to study hadronic medium effects on charmonium elliptic flows in heavy-ion collisions. In Pb-Pb collisions, the anisotropic energy density of the quark-gluon plasma (QGP) in the transverse plane…

核理论 · 物理学 2021-06-28 Baoyi Chen , Liu Jiang , Yunpeng Liu

Heavy quark and charmonium production as well as their space-time evolution are studied in transport simulations of heavy-ion collisions at RHIC and LHC. In the partonic transport model Boltzmann Approach of MultiParton Scatterings (BAMPS)…

高能物理 - 唯象学 · 物理学 2015-03-19 Jan Uphoff , Kai Zhou , Oliver Fochler , Zhe Xu , Carsten Greiner

We calculate leading-order medium photon and dilepton yields from a quark-gluon plasma using (3+1)-dimensional anisotropic hydrodynamics. In the case of dileptons, at leading-order it is sufficient to take into account non-equilibrium…

高能物理 - 唯象学 · 物理学 2015-09-15 Lusaka Bhattacharya , Radoslaw Ryblewski , Michael Strickland

It is known that the presence of background magnetic field in cosmic plasma distorts the acoustic peaks in CMBR. This primarily results from different types of waves in the plasma with velocities depending on the angle between the magnetic…

高能物理 - 唯象学 · 物理学 2015-05-27 Ranjita K. Mohapatra , P. S. Saumia , Ajit M. Srivastava

The relativistic diffusion process of heavy quarks is formulated on the basis of the relativistic Langevin equation in It\^{o} discretization scheme. The drag force inside the quark-gluon plasma (QGP) is parametrized according to the…

高能物理 - 唯象学 · 物理学 2009-08-03 Yukinao Akamatsu , Tetsuo Hatsuda , Tetsufumi Hirano

The drag and diffusion coefficients of heavy baryons ($\Lambda_c$ and $\Lambda_b$) in the hadronic phase created in the latter stage of the heavy-ion collisions at RHIC and LHC energies have been evaluated recently. In this work we compute…

The asymmetric initial geometry in p+Pb collisions provide an opportunity to probe the initial matter distribution in these collisions. Using A Multi-Phase Transport (AMPT) model, we have studied the production of light and heavy quark…

高能物理 - 唯象学 · 物理学 2021-08-11 Md Rihan Haque , Subhash Singha , Bedangadas Mohanty

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…

高能物理 - 唯象学 · 物理学 2012-04-20 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

We report on a lattice investigation of heavy quark diffusion within pure SU(3) plasma above the deconfinement transition, with the quarks treated to leading order in the heavy mass expansion. Using a multilevel algorithm, several volumes…

高能物理 - 格点 · 物理学 2015-03-19 A. Francis , O. Kaczmarek , M. Laine , J. Langelage

Based on the quark coalescence model, we derive relations among the momentum anisotropies of mesons and baryons in relativistic heavy ion collisions from a given, but arbitrary azimuthal distribution for the partons. Besides the familiar…

核理论 · 物理学 2009-11-10 Peter F. Kolb , Lie-Wen Chen , Vincenzo Greco , Che Ming Ko

Within the framework of the Langevin equation, we study the energy loss of heavy quark due to quasi-elastic multiple scatterings in a quark-gluon plasma created by relativistic heavy-ion collisions. We investigate how the initial…

核理论 · 物理学 2015-03-20 Shanshan Cao , Guang-You Qin , Steffen A. Bass

Anisotropic flow is sensitive to the shear $(\eta/s)$ and bulk ($\zeta/s$) viscosity of the quark-gluon plasma created in heavy-ion collisions, as well as the initial state of such collisions and hadronization mechanisms. In these…

核实验 · 物理学 2018-03-14 Redmer Alexander Bertens

The propagation of charm and bottom quarks through an ellipsoidal domain of quark gluon plasma has been studied within the ambit of non-equilibrium statistical mechanics. Energy dissipation of heavy quarks by both radiative and collisional…

核理论 · 物理学 2010-11-23 Santosh K Das , Jan-e Alam

Heavy quarks, i.e. charm and beauty, are produced on a shorter time scale with respect to the strongly-interacting matter produced in high-energy heavy-ion collisions. Therefore, they are unique probes to study the mechanisms of parton…

高能物理 - 实验 · 物理学 2017-03-08 A. Dubla

We present predictions for the nuclear modification factor and elliptic flow of D and B mesons, as well as of their decay electrons, in semicentral Pb-Pb collisions at the LHC. Heavy quarks are propagated in a Quark-Gluon Plasma using a…

高能物理 - 唯象学 · 物理学 2008-04-22 H. van Hees , V. Greco , R. Rapp

Elliptic flow has been one of the key observables for establishing the finding of the quark-gluon plasma (QGP) at the highest energies of Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC). As a sign of collectively…

核理论 · 物理学 2015-06-17 Jussi Auvinen , Hannah Petersen

We present results for the quenching, elliptic flow and azimuthal correlations of heavy flavour particles in high-energy nucleus-nucleus collisions obtained through the POWLANG transport setup, developed in the past to study the propagation…

高能物理 - 唯象学 · 物理学 2015-06-23 A. Beraudo , A. De Pace , M. Monteno , M. Nardi , F. Prino

We study heavy quark energy loss and thermalization in hot and dense nuclear medium. The diffusion of heavy quarks is calculated via a Langevin equation, both for a static medium as well as for a quark-gluon plasma (QGP) medium generated by…

核理论 · 物理学 2015-06-11 Shanshan Cao , Guang-You Qin , Steffen A. Bass

Heavy quarks placed within a hot QCD medium undergo Brownian motion, characterized by specific transport coefficients. Their determination can be simplified by expanding them in $T/M$, where $T$ is the temperature and $M$ is a heavy quark…

高能物理 - 格点 · 物理学 2022-08-15 D. Banerjee , S. Datta , M. Laine

Anisotropic flow measurements constrain the shear $(\eta/s)$ and bulk ($\zeta/s$) viscosity of the quark-gluon plasma created in heavy-ion collisions, as well as give insight into the initial state of such collisions and hadronization…

核实验 · 物理学 2018-03-14 R. A. Bertens