Dr Volodymyr Konchakovski (Institute for Theoretical Physics, Giessen University)
We present a systematic study of correlations in pseudorapidity and azimuthal angle for charged high transverse momentum hadrons in heavy-ion collisions at the top RHIC energy within the Parton-Hadron-String-Dynamics (PHSD) transport approach. The study shows that a significant part (60%) of the high-pT hadron attenuation seen experimentally can be attributed to inelastic interactions of 'leading' pre-hadrons with the dense hadronic environment. The presence of partonic phase leads to larger suppression of 'far-side' correlations which agrees with available data. We find also a fair description of the elliptic flow of charged hadrons as a function of the energy of the reaction, its centrality and the transverse momentum pT within PHSD approach. Furthermore, an approximate quark-number scaling of the elliptic flow v2 of hadrons is observed in the PHSD results, too. Thus we conclude that partonic phase plays significant role for the both: high-pT correlations and collective flow.
Prof. Elena Bratkovskaya (Institute for Theoretical Physics, Frankfurt University) Mr Vadim Voronyuk (Dubna, JINR) Prof. Viacheslav Toneev (Dubna, JINR) Dr Volodymyr Konchakovski (Institute for Theoretical Physics, Giessen University) Prof. Wolfgang Cassing (Institute for Theoretical Physics, Giessen University)