中文
相关论文

相关论文: The directed flow maximum near c_s=0

200 篇论文

Predictions of the proton directed flow ($v_1$) in semicentral Au+Au collisions in the energy range between 4.5 and 7.7 GeV are done. The calculations are performed within the model of three-fluid dynamics with crossover equation of state,…

核理论 · 物理学 2026-02-27 Yuri B. Ivanov

The proton elliptic flow in collisions of Ca on Ca at energies from 30 to 100 MeV/nucleon is studied in an isospin-dependent transport model. With increasing incident energy, the elliptic flow shows a transition from positive to negative…

核理论 · 物理学 2009-10-31 Yu-Ming Zheng , C. M. Ko , Bao-An Li , Bin Zhang

We have studied the rapidity-odd directed flow in $^{197}$Au+$^{197}$Au collisions in the beam energy range from $\sqrt{s_{NN}}$ = 7.7 to 39 GeV within the framework of an extended multiphase transport model with both partonic and hadronic…

核理论 · 物理学 2018-08-28 Chong-Qiang Guo , He Liu , Jun Xu

We study the proton sideward and elliptic differential flow for Au+Au collisions at AGS energies (2 -- 8 A cdot GeV) in a microscopic relativistic transport model that includes all baryon resonances up to a mass of 2 GeV as well as string…

核理论 · 物理学 2009-11-07 P. K. Sahu , W. Cassing

We study thermodynamic properties and speed of sound in a free en- ergy evolution of quark-gluon plasma (QGP) with one loop correction factor in the mean-field potential. The values of the thermodynamic prop- erties like pressure, entropy…

高能物理 - 唯象学 · 物理学 2015-05-15 S. Somorendro Singh , R. Ramanathan

Non-abelian energy loss in quark gluon plasma is shown to lead to novel hadron ratio suppression patterns in ultrarelativistic nuclear collisions. We apply recent (GLV) estimates for the gluon radiative energy loss, which increases linearly…

核理论 · 物理学 2008-11-26 P. Levai , G. Papp , G. Fai , M. Gyulassy

The behavior of hadronic matter at high baryon densities is studied within Ultrarelativistic Quantum Molecular Dynamics (URQMD). Baryonic stopping is observed for Au+Au collisions from SIS up to SPS energies. The excitation function of flow…

The sign change of the slope of the directed flow of baryons has been predicted as a signal for a first order phase transition within fluid dynamical calculations. Recently, the directed flow of identified particles has been measured by the…

核理论 · 物理学 2014-06-09 J. Steinheimer , J. Auvinen , H. Petersen , M. Bleicher , H. Stöcker

Preliminary data on transverse energy `flow' and event asymmetries reported by the E877(814) collaborations are compared to ARC model calculations for Au+Au at full AGS beam energy. ARC triple differential cross-sections for protons and…

核理论 · 物理学 2008-11-26 D. E. Kahana , Y. Pang , E. Shuryak

The contribution presents a summary of the Gauge/Gravity approach to the study of hydrodynamic flow of the quark-gluon plasma formed in heavy-ion collisions. Considering the ideal case of a supersymmetric Yang-Mills theory for which the…

高能物理 - 理论 · 物理学 2009-06-24 Michal P. Heller , Romuald A. Janik , R. Peschanski

The specific shear viscosity (eta/s)_QGP of a Quark-Gluon-Plasma (QGP) at temperatures T_c < T < 2T_c is extracted from the centrality dependence of the eccentricity-scaled elliptic flow measured in ultra-relativistic heavy-ion collisions.…

核理论 · 物理学 2011-05-23 Huichao Song , Steffen A. Bass , Ulrich W. Heinz , Tetsufumi Hirano , Chun Shen

We present new experimental data on directed flow in collisions of Au+Au, Xe+CsI and Ni+Ni at incident energies from 90 to 400A MeV. We study the centrality and system dependence of integral and differential directed flow for particles…

核实验 · 物理学 2011-05-26 FOPI Collaboration , A. Andronic

Fluid dynamic considerations are used to determine the electric current spectral density in the regime of small energies and momenta. The spectral density in this regime is parameterized by the electric conductivity, the charge…

核理论 · 物理学 2023-01-04 Stefan Floerchinger , Charlotte Gebhardt , Klaus Reygers

The Skyrme potential energy density functional is introduced into the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) model and the updated version is applied to studying the directed and elliptic flows of light particles (protons,…

核理论 · 物理学 2014-04-01 Yongjia Wang , Chenchen Guo , Qingfeng Li , Hongfei Zhang , Zhuxia Li , W. Trautmann

We present a detailed analysis of the beam energy dependence of the mechanisms for the generation of directed and elliptic flows in Au+Au collisions focusing on the role of hadronic rescattering and spectator shadowing within a microscopic…

核实验 · 物理学 2018-06-26 Chao Zhang , Jiamin Chen , Xiaofeng Luo , Feng Liu , Yasushi Nara

We investigate the influence of a temperature-dependent shear viscosity over entropy density ratio eta/s on the transverse momentum spectra and elliptic flow of hadrons in ultrarelativistic heavy-ion collisions. We find that the elliptic…

核理论 · 物理学 2011-06-27 Harri Niemi , Gabriel S. Denicol , Pasi Huovinen , Etele Molnar , Dirk H. Rischke

We have revisited several interesting questions on how the rapidity-odd directed flow is developed in relativistic $^{197}$Au+$^{197}$Au collisions at $\sqrt{s_{NN}}$ = 200 and 39 GeV based on a multiphase transport model. As the partonic…

核理论 · 物理学 2017-12-04 Chong-Qiang Guo , Chun-Jian Zhang , Jun Xu

Recently it has been discovered that the elliptic flow, v2, of composite charged particles emitted at midrapidity in Heavy-Ion collisions at intermediate energies shows the strongest sensitivity to the Nuclear Equation of State (EoS) which…

核理论 · 物理学 2018-09-12 A. Le Fevre , Y. Leifels , C. Hartnack , J. Aichelin

In many simulations of high-energy heavy-ion collisions on an event-by-event analysis, it is known that the initial energy density distribution in the transverse plane is highly fluctuating. Subsequent longitudinal expansion will lead to…

高能物理 - 唯象学 · 物理学 2009-11-11 Wei-Ning Zhang , Yan-Yu Ren , Cheuk-Yin Wong

We predict the elliptic flow parameter v_2 in U+U collisions at sqrt{s_{NN}}=200 GeV and in Pb+Pb collisions at sqrt{s_{NN}} = 2.76 TeV using a hybrid model in which the evolution of the quark gluon plasma is described by ideal…

核理论 · 物理学 2011-02-22 Tetsufumi Hirano , Pasi Huovinen , Yasushi Nara