Hydro and Jets in Relativistic Heavy-Ion Collisions

¹ Department of Physics, University of Oslo, PB 1048 Blindern, N-0316 Oslo, Norway
² Skobeltsyn Institute of Nuclear Physics, Moscow State University, RU-119991 Moscow Russia
³ Frankfurt Institute for Advanced Studies, Ruth-Moufang-Str. 1, D-60438 Frankfurt a.M. Germany
⁴ National Research Nuclear University “MEPhI” (Moscow Engineering Physics Institute), RU-115409 Moscow Russia
⁵ Czech Technical University in Prague, FNSPE, CR-11519 Prague Czech Republic
⁶ Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex France
⁷ Joint Institute for Nuclear Researches, Dubna Russia

^a e-mail: larissa.bravina@fys.uio.no

Published online: 28 October 2016

Abstract

We apply HYDJET++ model, which contains the treatment of both soft and hard processes, to study the heavy-ion collisions at LHC energies. The interplay of parametrised hydrodynamics and jets describes many features of the development of particle anisotropic flow including the break-up of mass hierarchy of elliptic and triangular flow, the falloff of the flow at certain transverse momentum and violation of the number-ofconstituent- quark (NCQ) scaling at LHC energies compared to the lower ones. Other signals, such as long-range dihadron correlations (ridge) and event-by-event (EbyE) fluctuations of the flow are also discussed. Model calculations demonstrate a good agreement with the available experimental data.