The Usage of the K Factor in Heavy Ion Physics
Open Access
- 1 February 2003
- journal article
- Published by Springer Nature in Acta Physica Hungarica A) Heavy Ion Physics
- Vol. 17 (1) , 75-92
- https://doi.org/10.1556/aph.17.2003.1.9
Abstract
The theoretical K factor, describing the difference between the leading and higher-order cross sections, can be defined in more than one way. The resulting estimate of the higher-order cross section is sensitive to the order of the fit to the parton densities and the number of loops at which αs is evaluated. We describe alternate ways to define the K factor and show how the definition affects its magnitude and shape for the examples of hadroproduction of Drell-Yan lepton pairs and heavy quarks. We discuss which definition is appropriate under what circumstances.Keywords
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This publication has 32 references indexed in Scilit:
- Is There a Significant Excess in Bottom Hadroproduction at the Tevatron?Physical Review Letters, 2002
- Gluon shadowing and hadron production at RHICPhysics Letters B, 2002
- Quarkonium production at high-energy collidersPublished by Elsevier ,2001
- HighAzimuthal Asymmetry in Noncentralat RHICPhysical Review Letters, 2001
- Effects of jet quenching on highhadron spectra in high-energy nuclear collisionsPhysical Review C, 1998
- Where Is the Jet Quenching inCollisions at?Physical Review Letters, 1998
- Nuclear Gluon Shadowing via Continuum Lepton Pairs inatPhysical Review Letters, 1996
- HIJING 1.0: A Monte Carlo program for parton and particle production in high energy hadronic and nuclear collisionsComputer Physics Communications, 1994
- hijing: A Monte Carlo model for multiple jet production in,, andcollisionsPhysical Review D, 1991
- A complete calculation of the order αs2 correction to the Drell-Yan K-factorNuclear Physics B, 1991