Anisotropic flow from AGS to LHC energies |
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| Institution: | 1. Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany;2. Theoretical Physics Division, CERN, CH-1211 Geneva 23, Switzerland;1. Institut de Physique Théorique, CEA Saclay, 91191, Gif-sur-Yvette Cedex, France;2. Department of Physics, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium;3. INFN Sezione di Pavia, via Bassi 6, 27100 Pavia, Italy;4. Theoretical Physics Department, CERN, CH-1211 Genève 23, Switzerland;1. School of Mathematics and Statistics Science, Ludong University, Yantai, Shandong, 264025, China;2. School of Mathematics and Information Sciences, Yantai University, Yantai 264005, China;3. School of Science, Shandong Jianzhu University, Jinan 250101, China;1. Department of Modern Physics, University of Science and Technology of China;2. Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan,Hubei 430079, China;3. Physics Department and Center for Particle Physics and Field Theory, Fudan University, Shanghai 200433, China |
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| Abstract: | 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 Pb+Pb collisions can be quantitatively reproduced by hydrodynamic expansion, indicating early thermalization in the collision. We predict the excitation functions of the 2nd and 4th harmonic flow coefficients from AGS to LHC energies and discuss their sensitivity to the quark-hadron phase transition. |
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