K-factors in parton cascades at RHIC and SPS

被引：8

作者：

Bass, SA ^{[1
]}

Müller, B ^{[1
]}

机构：

[1] Duke Univ, Dept Phys, Durham, NC 27708 USA

来源：

PHYSICS LETTERS B | 1999年 / 471卷 / 2-3期

关键词：

D O I：

10.1016/S0370-2693(99)01364-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Different treatments for the inclusion of higher-order perturbative QCD corrections in parton based transport models of relativistic heavy-ion collisions are studied and their influence on experimental observables is investigated. At RHIC, particle multiplicities may vary by more than 30%, depending on the correction scheme. A detailed analysis of the squared relative momentum transfers Q(2) to be expected in parton (re)scatterings at RHIC casts doubt on the applicability of pQCD based transport approaches at the SPS and rules out the application of higher-order correction schemes based on a rescaling of Q(2) in the running coupling constant alpha(2) at all energies. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：108 / 112

页数：5