1993/07/12 by K. Eskola, K. J. Eskola, Xin-Nian Wang · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.49.1284
published as Phys.Rev. D49 (1994) 1284-1292 · 19 pages in REVTEX with 12 figures in separate uuencoded postscript files, LBL-34156
arxiv created 1993/07/12 · openalex publication_date 1994/02/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The space and time evolution of initial parton production in ultrarelativistic heavy ion collisions is investigated within the framework of perturbative QCD which includes both initial and final state radiations. The uncertainty principle is used to relate the lifetime of a radiating parton to its virtuality and momentum. The interaction time of each hard or semihard parton scattering is also taken into account. For central Au+Au collisions at √(s)=200 GeV, most of the partons are found to be produced within 0.5 fm/c after the total overlap of the two colliding nuclei. The local momentum distribution is approximately isotropical at that time. The implication on how to treat correctly the secondary scattering in an ultimate parton cascading model is also discussed.