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Using the VISHNU hybrid model, we calculate the multiplicity, spectra, and elliptic flow of $\Lambda$, $\Xi$ and $\Omega$ in 2.76 A TeV Pb+Pb collisions. Comparisons between our calculations and the ALICE measurements show that the model…

Nuclear Theory · Physics 2015-06-23 Xiangrong Zhu , Fanli Meng , Huichao Song , Yu-Xin Liu

A comprehensive viscous hydrodynamic fit of spectra and elliptic flow for charged hadrons and identified pions and protons from Au+Au collisions of all centralities measured at the Relativistic Heavy Ion Collider is performed and used as…

Nuclear Theory · Physics 2012-10-08 Chun Shen , Ulrich W. Heinz , Pasi Huovinen , Huichao Song

Using iEBE-VISHNU hybrid model with the AMPT initial conditions, we study the higher order flow harmonics of identified hadrons in 2.76 A TeV Pb+Pb collisions. Comparison with the recent ALICE measurements at 20-30\% centrality shows that…

Nuclear Theory · Physics 2016-06-29 Hao-jie Xu , Zhuopeng Li , Huichao Song

It is shown that the recently developed hybrid code VISHNU, which couples a relativistic viscous fluid dynamical description of the quark-gluon plasma (QGP) with a microscopic Boltzmann cascade for the late hadronic rescattering stage,…

Nuclear Theory · Physics 2011-06-21 Huichao Song , Steffen A Bass , Ulrich W Heinz , Tetsufumi Hirano , Chun Shen

Using the (2+1)-dimensional ultrarelativistic viscous hydrodynamics+hadron cascade, VISHNU, hybrid model, we study the $p_{\rm T}$-spectra and elliptic flow of $\Lambda$, $\Xi$, and $\Omega$ in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV…

Nuclear Theory · Physics 2016-08-16 Xiangrong Zhu

The elliptic flow v_2 for strange and multi-strange bayons in 2.76 A TeV Pb+Pb collisions is investigated with VISHNU hybrid model that connects 2+1-d viscous hydrodynamics with a hadron cascade model. It is found that VISHNU nicely…

Nuclear Theory · Physics 2015-06-17 Huichao Song , Fanli Meng , Xianyin Xin , Yu-Xin Liu

In this paper, we study and predict flow observables in 2.76 A TeV and 5.02 A TeV Pb +Pb collisions, using the iEBE-VISHNU hybrid model with TRENto and AMPT initial conditions and with different forms of the QGP transport coefficients. With…

Nuclear Theory · Physics 2017-10-25 Wenbin Zhao , Hao-jie Xu , Huichao Song

Using the newly developed hybrid model VISHNU which connects viscous hydrodynamics with a hadron cascade model, we study the differential and integrated elliptic flow v_2 at different centrality bins for 200 A GeV Au+Au collisions and 2.76…

Nuclear Theory · Physics 2015-03-19 Huichao Song , Steffen A. Bass , Ulrich W. Heinz

Within the framework of the coalescence model based on the phase-space distributions of protons and neutrons generated from the {{\tt iEBE-VISHNU}} hybrid model with {{\tt AMPT}} initial conditions, we study the spectra and elliptic flow of…

Nuclear Theory · Physics 2018-11-28 Wenbin Zhao , Lilin Zhu , Hua Zheng , Che Ming Ko , Huichao Song

Predictions and comparisons of hadronic flow observables for Pb+Pb collisions at 2.76 A TeV and 5.02 A TeV are presented using a hydrodynamics + hadronic cascade hybrid approach. Initial conditions are generated via a new formulation of the…

High Energy Physics - Phenomenology · Physics 2017-07-05 Scott McDonald , Chun Shen , Francois Fillion-Gourdeau , Sangyong Jeon , Charles Gale

The first results from heavy ion collisions at the Large Hadron Collider for charged particle spectra and elliptic flow are compared to an event-by-event hybrid approach with an ideal hydrodynamic expansion. This approach has been shown to…

Nuclear Theory · Physics 2013-05-29 Hannah Petersen

Particle production in Pb-Pb collisions at 2.76 TeV is studied in the (3+1)-dimensional viscous hydrodynamic model. The shapes of the calculated transverse momentum spectra of pions, kaons, protons, Xis, and Omegas are in satisfactory…

Nuclear Theory · Physics 2012-06-28 Piotr Bozek , Iwona Wyskiel-Piekarska

The elliptic flow coefficient ($v_{2}$) of identified particles in Pb-Pb collisions at $\sqrt{s_\mathrm{{NN}}} = 2.76$ TeV was measured with the ALICE detector at the LHC. The results were obtained with the Scalar Product method, a…

Nuclear Experiment · Physics 2015-07-15 ALICE Collaboration

We report on the elliptic and triangular flow measurements for a number of hadrons including charged pions, and (anti-)protons, as well as those with strangeness content: kaons, ${\rm \phi}$-meson, ${\rm K^0_s}$, ${\rm…

Nuclear Experiment · Physics 2019-08-15 Francesco Noferini

We present the results on elliptic flow with multi-strange baryons produced in Pb-Pb collisions at \sqrt{s_{NN}} = 2.76 TeV. The analysis is performed with the ALICE detector at LHC. Multi-strange baryons are reconstructed via their decay…

Nuclear Experiment · Physics 2015-06-04 Zhongbao Yin

The elliptic, triangular, quadrangular and pentagonal anisotropic flow coefficients for $\pi^{\pm}$, $\mathrm{K}^{\pm}$ and p+$\overline{\mathrm{p}}$ in Pb-Pb collisions at $\sqrt{s_\mathrm{{NN}}} = 2.76$ TeV were measured with the ALICE…

Nuclear Experiment · Physics 2016-11-29 ALICE Collaboration

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

Nuclear Theory · Physics 2011-08-04 Tetsufumi Hirano , Pasi Huovinen , Yasushi Nara

The multiplicity and elliptic flow of charged particles produced in Pb-Pb collisions at center of mass energy $\sqrt{s_{NN}}=2.76$ TeV from the Large Hadron Collider are studied in a multiphase transport (AMPT) model. With the standard…

Nuclear Theory · Physics 2015-03-17 Jun Xu , Che Ming Ko

We calculate the thermal photon transverse momentum spectra and elliptic flow in $\sqrt{s_{NN}} = 200$ GeV Au+Au collisions at RHIC and in $\sqrt{s_{NN}} = 2.76$ TeV Pb+Pb collisions at the LHC, using an ideal-hydrodynamical framework which…

High Energy Physics - Phenomenology · Physics 2013-05-29 Hannu Holopainen , Sami Räsänen , Kari J. Eskola

Using the (2+1)-dimensional viscous hydrodynamic code VISH2+1, we present systematic studies of the dependence of pion and proton transverse momentum spectra and their elliptic flow in 200 A GeV Au+Au collisions on the parameters of the…

Nuclear Theory · Physics 2010-12-02 Chun Shen , Ulrich W. Heinz , Pasi Huovinen , Huichao Song
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