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Related papers: Elliptic flow in ultra-relativistic collisions wit…

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Within hydrodynamics we study the effects of the initial spatial anisotropy in non-central heavy-ion collisions on the momentum distributions of the emitted hadrons. We show that the elliptic flow measured at midrapidity in 158 A GeV/c…

Nuclear Theory · Physics 2009-10-09 Peter F. Kolb , Josef Sollfrank , Ulrich Heinz

It is proposed to identify a strong electric field - created during relativistic collisions of asymmetric nuclei - via the observation of pseudorapidity and transverse momentum distributions of hadrons with the same mass but opposite…

Nuclear Theory · Physics 2017-04-05 V. D. Toneev , V. Voronyuk , E. E. Kolomeitsev , W. Cassing

The difference in elliptic flow $v_{2}$ between protons and antiprotons, produced in $^{197}\text{Au}+^{197}\text{Au}$ collisions at center-of-mass energies $\sqrt{s_{NN}}=5-12~\text{GeV}$, is studied within a modified version of the…

Nuclear Theory · Physics 2022-03-24 Pengcheng Li , Yongjia Wang , Jan Steinheimer , Qingfeng Li , Hongfei Zhang

We consider collective effects in pp-collisions at the LHC energies related to presence of the large orbital angular momentum in the initial state and role of this orbital momentum in the elliptic flow behavior.

High Energy Physics - Phenomenology · Physics 2015-05-27 S. M. Troshin , N. E. Tyurin

Elliptic flow of direct photons in relativistic heavy ion collisions is believed to be dominated by contribution from thermal radiation of quark gluon plasma up to $p_T$ $\sim 5$ GeV/$c$, although other sources start outshining the thermal…

High Energy Physics - Phenomenology · Physics 2013-09-11 Rupa Chatterjee , Hannu Holopainen , Ilkka Helenius , Thorsten Renk , Kari J. Eskola

The space-time propagation of heavy quarks in ultra-relativistic heavy ion collisions is studied within the partonic transport model Boltzmann Approach of MultiParton Scatterings (BAMPS). In this model heavy quarks interact with the…

High Energy Physics - Phenomenology · Physics 2011-08-25 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

We report on the first measurement of inclusive J/$\psi$ elliptic flow, $v_2$, in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV in the rapidity…

Nuclear Experiment · Physics 2014-09-16 ALICE Collaboration

This paper presents results on event-by-event elliptic flow fluctuations in Au+Au collisions at sqrt(s_NN)=200Gev, where the contribution from non-flow correlations has been subtracted. An analysis method is introduced to measure non-flow…

Nuclear Experiment · Physics 2019-08-13 B. Alver

Directed and elliptic flow are reported for charged pions and protons as a function of transverse momentum, rapidity, and centrality in 40 and 158 AGeV Pb + Pb collisions. The standard method of correlating particles with an event plane is…

A sign reversal of the directed flow parameter $v_1$ in the central rapidity region in Au+Au collisions at $\sqrt s =200$~AGeV is predicted. This anti-flow is shown to be linked to the expansion of the hot matter created. In line with this…

High Energy Physics - Phenomenology · Physics 2014-11-17 M. Bleicher , H. Stöcker

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…

Nuclear Experiment · Physics 2018-03-14 R. A. Bertens

Since their discovery, fluctuations in the initial state of heavy-ion collisions have been understood as originating mostly from the random positions of nucleons within the colliding nuclei. We consider an alternative approach where all the…

Fluctuations in the initial transverse energy-density distribution lead to anisotropic flows as observed in central high-energy heavy-ion collisions. Studies of longitudinal fluctuations of the anisotropic flows can shed further light on…

Nuclear Theory · Physics 2015-04-24 Long-Gang Pang , Guang-You Qin , Victor Roy , Xin-Nian Wang , Guo-Liang Ma

An overwhelming fraction of photons from relativistic heavy ion collisions has its origin in the decay of $\pi^0$ and $\eta$ mesons. We calculate the azimuthal asymmetry of the decay photons for several azimuthally asymmetric pion…

Nuclear Theory · Physics 2009-11-11 Biswanath Layek , Rupa Chatterjee , Dinesh K. Srivastava

The elliptic flows in both Cu+Cu and Au+Au collisions at the Relativistic Heavy Ion Collider are studied in a multi-phase transport model. For both collisions at same reduced impact parameter and minimum bias collisions, the elliptic flow…

Nuclear Theory · Physics 2007-05-23 Lie-Wen Chen , Che Ming Ko

We update our calculations of thermal-photon production in nuclear collisions at the Relativistic Heavy-Ion Collider (RHIC). Specifically, we address the recent experimental observation of an elliptic flow of direct photons comparable in…

High Energy Physics - Phenomenology · Physics 2011-11-15 H. van Hees , C. Gale , R. Rapp

Based on the (3+1)-dimensional hydrodynamic model, the space-time evolution of hot and dense nuclear matter produced in non-central relativistic heavy-ion collisions is discussed. The elliptic flow parameter v_2 is obtained by Fourier…

Nuclear Theory · Physics 2007-05-23 Tetsufumi Hirano

We analyze the second Fourier coefficient $v_2$ of the pion azimuthal distribution in non-central heavy-ion collisions in a relativistic hydrodynamic model. The exact treatment of the decay kinematics of resonances leads to almost vanishing…

Nuclear Theory · Physics 2009-11-06 Tetsufumi Hirano

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

We analyze the proton-lead collisions at the LHC energy of 5.02TeV in the three-stage approach, previously used to successfully describe the relativistic A-A collisions. The approach consists of the early phase, modeled with the Glauber…

Nuclear Theory · Physics 2013-07-15 Piotr Bozek , Wojciech Broniowski