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Event-plane correlators

Abstract : Correlators between event planes of different harmonics in relativistic heavy-ion collisions have the potential to provide crucial information on the initial state of the matter formed in these collisions. We present a new procedure for analyzing such correlators, which is less demanding in terms of detector acceptance than the one used recently by the ATLAS collaboration to measure various two-plane and three-plane correlators in Pb-Pb collisions at LHC. It can also be used unambiguously for quantitative comparison between theory and data. We use this procedure to carry out realistic simulations within the transport model AMPT. Our theoretical results are in excellent agreement with the ATLAS data, in contrast with previous hydrodynamic calculations which only achieved qualitative agreement. We present predictions for new correlators, in particular four-plane correlators, which can easily be analyzed with our new method.
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Submitted on : Friday, June 3, 2016 - 3:03:41 PM
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Rajeev S. Bhalerao, Jean-Yves Ollitrault, Subrata Pal. Event-plane correlators. Physical Review C, American Physical Society, 2013, 88 (2), pp.4909. ⟨10.1103/PhysRevC.88.024909⟩. ⟨cea-01326375⟩



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