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We compare microscopic transport model calculations to recent data on the directed and elliptic flow of various hadrons in 2 - 10 A GeV Au+Au and Pb (158 A GeV) Pb collisions. For the Au+Au excitation function a transition from the…

Nuclear Theory · Physics 2007-05-23 Sven Soff , Steffen A. Bass , Marcus Bleicher , Horst Stoecker , Walter Greiner

The elliptic flow v2 is presented for the Cu+Cu collisions at sqrt{s_NN} = 62.4 and 200 GeV, as a function of pseudorapidity. Comparison to results for the Au+Au collisions at the same energies shows a reduction of about 20% in the flow…

Nuclear Experiment · Physics 2010-01-11 Alice C. Mignerey

The directed flow of charged hadron and identified particles has been studied in the framework of a multi-phase transport (AMPT) model, for $^{197}$Au+$^{197}$Au collisions at $\sqrt{s_{NN}}=$200, 130, 62.4, 39, 17.2 and 9.2 GeV. The…

Nuclear Theory · Physics 2010-04-06 J. Y. Chen , J. X. Zuo , X. Z. Cai , F. Liu , Y. G. Ma , A. H. Tang

The elliptic, $v_2$, triangular, $v_3$, and quadrangular, $v_4$, azimuthal anisotropic flow coefficients are measured for unidentified charged particles, pions and (anti-)protons in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV with…

Nuclear Experiment · Physics 2016-06-24 ALICE Collaboration

Within a transport model coupled with a microscopic coalescence model, the directed and elliptic flows of protons and deuterons as well as their scalling properties are studied in the centrality of 20-30% Au+Au collisions at $\sqrt{s_{\rm…

Nuclear Theory · Physics 2023-03-21 Huan Du , Gao-Feng Wei , Gao-Chan Yong

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…

Nuclear Theory · Physics 2009-10-31 Yu-Ming Zheng , C. M. Ko , Bao-An Li , Bin Zhang

Space-time picture of the anisotropic flow evolution in Au+Au collisions at BNL RHIC is studied for strange hadrons within the microscopic quark-gluon string model. The directed flow of both mesons and hyperons demonstrates wiggle structure…

High Energy Physics - Phenomenology · Physics 2009-11-11 E. Zabrodin , L. Bravina , G. Burau , J. Bleibel , C. Fuchs , Amand Faessler

The angular correlations measured in proton-proton collisions at 7 TeV are decomposed into contributions from back to back emission and elliptic flow. Modeling the dominant term in the correlation functions as a momentum conservation effect…

High Energy Physics - Phenomenology · Physics 2011-02-09 Piotr Bozek

We investigate the development of the directed, $v_1$, and elliptic flow, $v_2$, in heavy ion collisions in mid-central Au+Au reactions at $E_\mathrm{lab}=1.23 A$ GeV. We demonstrate that the elliptic flow of hot and dense matter is…

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

The elliptic flow splitting $\Delta v_2$ between $\bar{u}$ and $u$ quarks as well as between $\pi^-$ and $\pi^+$ in midcentral Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV has been studied, based on the framework of an extended multiphase…

Nuclear Theory · Physics 2019-05-01 Zhang-Zhu Han , Jun Xu

Proton elliptic flow is studied as a function of impact-parameter $b$, for two transverse momentum cuts in 2 - 6 AGeV Au + Au collisions. The elliptic flow shows an essentially linear dependence on b (for $1.5 < b < 8$ fm) with a negative…

Nuclear Experiment · Physics 2008-11-26 E895 Collaboration , P. Danielewicz

The elliptic flow of Lambda hyperons has been measured by the NA49 experiment in semi-central Pb+Pb collisions at 158 AGeV. The standard method of correlating particles with an event plane has been used. Measurements of v2 near mid-rapidity…

Nuclear Experiment · Physics 2007-05-23 Grzegorz Stefanek

Recent STAR data from the RHIC beam energy scan (BES) show that the midrapidity slope dv1/dy of the directed flow v1 of net-protons changes sign twice within the collision energy range 7.7 - 39 GeV. To investigate this phenomenon, we study…

Nuclear Theory · Physics 2015-06-22 Jussi Auvinen , Jan Steinheimer , Hannah Petersen

We perform a systematic study of elliptic flow ($v_2$) in Au+Au collision at $\sqrt{s_{NN}}=5$ GeV by using a microscopic transport model JAM. The centrality, pseudorapidity, transverse momentum and beam energy dependence of $v_2$ for…

Nuclear Experiment · Physics 2018-01-08 Jiamin Chen , Xiaofeng Luo , Feng Liu , Yasushi Nara

In this paper, new measurements of anisotropic flow ($v_{1}$, $v_{2}$) for identified particles such as pions and proton in Cu+Au collisions at 200 GeV and U+U collisions at 193 GeV are reported. The anisotropic flow is studied as a…

Nuclear Experiment · Physics 2015-06-11 Shengli Huang

To incorporate the effect of gluons on the evolution dynamics of the quark matter produced in relativistic heavy-ion collisions, we extend the 3-flavor Nambu-Jona-Lasinio (NJL) transport model to include the contribution from the Polyakov…

Nuclear Theory · Physics 2021-10-13 Wen-Hao Zhou , He Liu , Feng Li , Yi-Feng Sun , Jun Xu , Che Ming Ko

It has been argued that high-multiplicity proton-proton collisions at the LHC may exhibit collective phenomena usually studied in the context of heavy-ion collisions, such as elliptic flow. We study this issue using DIPSY - a Monte Carlo…

High Energy Physics - Phenomenology · Physics 2011-08-17 Emil Avsar , Christoffer Flensburg , Yoshitaka Hatta , Jean-Yves Ollitrault , Takahiro Ueda

The directed flow of inclusive, transported and non-transported (including produced) protons, as well as antiprotons, has been studied in the framework of Ultra-Relativistic Quantum Molecular Dynamics approach (UrQMD model) for Au+Au…

Nuclear Experiment · Physics 2013-05-30 Yao Guo , Feng Liu , Aihong Tang

We present measurements of elliptic flow ($v_{2}$) of $K_{s}^{0}$, $\Lambda$, $\bar{\Lambda}$, $\phi$, $\Xi^{-}$, $\overline{\Xi}^{+}$, and $\Omega^{-}$+$\overline{\Omega}^{+}$ at mid-rapidity ($|\eta| <$ 1.0) in isobar collisions…

Nuclear Experiment · Physics 2023-11-17 V. Bairathi