Hydrodynamical models must be able to reproduce data not only in average for a given centrality class but for each event. In particular they must reproduce the scaled $v_n$ distributions obtained by ATLAS [1,2] and ALICE . These distributions are independent of medium properties such as viscosity, and so directly probe the initial conditions.
They in fact provide a strong test for initial condition models: many models (e.g. Glauber and MC-KLN) can be ruled out and so far only two models lead to satisfactory results [4,5]. In this work, we show that NeXus initial conditions also provide reasonable results for scaled $v_n$ distributions at LHC energies and make predictions for RHIC top energy.
 ATLAS Collaboration Nucl. Phys. A 904-905 421c (2013)
 ATLAS Collaboration JHEP 1311 183 (2013)
 ALICE Collaboration J. Phys. Conf. Ser. 446 012031 (2013)
 C. Gale, S. Jeon, B. Schenke, P. Tribedy, and R. Venugopalan, Phys. Rev. Lett. 110, 012302 (2013),
 H. Niemi, K. J. Eskola, and R. Paatelainen, Phys. Rev. C 93, 024907 (2016)
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