2003/07/31 by Tetsufumi Hirano, Yasushi Nara
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.69.034908
published as Phys.Rev. C69 (2004) 034908 · 11 pages, 9 figures; some references added; title changed, some data points included in figures
arxiv created 2004/02/13 · openalex publication_date 2004/03/25 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We investigate the transverse dynamics in Au+Au collisions at √sNN=200\phantom\rule0.3em0exGeV by emphasis upon the interplay between soft and hard components through pT dependences of particle spectra, ratios of yields, suppression factors, and elliptic flow for identified hadrons. From hydrodynamics combined with traversing minijets which go through jet quenching in the hot medium, we calculate interactions of hard jets with the soft hydrodynamic components. It is shown by the explicit dynamical calculations that the hydrodynamic radial flow and the jet quenching of hard jets are the keys to understand the differences among the hadron spectra for pions, kaons, and protons. This leads to the natural interpretation for Np∕N_\ensuremathπ\ensuremath∼1, RAA\ensuremath\gtrsim1 for protons, and v2p>v2^\ensuremathπ recently observed in the intermediate transverse momentum region at Relativistic Heavy Ion Collider.