K-Factors in Parton Cascades at RHIC and SPS

Details K-Factors in Parton Cascades at RHIC and SPS K-Factors in Parton Cascades at RHIC and SPS

1999-08-04

arxiv.org/abs/nucl-th/9908014v2

Phys.Lett.B471:108-112,1999

Physics

Nuclear Physics

Nuclear Theory

12 pages, includes 4 eps-figures; replaced by revised version, Phys. Lett. B in press

Scientific paper

10.1016/S0370-2693(99)01364-7

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 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 the relative squared momentum transfers in the running coupling constant at all energies.

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