Renormalization scale uncertainty in tne DIS 2+1 jet cross-section

Abstract

The deep inelastic scattering 2+1 jet cross- section is a useful observable for precision tests of QCD, e.g. measuring the strong coupling constant alpha(s). A consistent analysis requires a good understanding of the theoretical uncertainties and one of the most fundamental ones in QCD is due to the renormalization scheme and scale ambiguity. Different methods, which have been proposed to resolve the scale ambiguity, are applied to the 2+1 jet cross-section and the uncertainty is estimated. It is shown that the uncertainty can be made smaller by choosing the jet definition in a suitable way.

24 pages, uuencoded compressed tar file, DESY 94-082, TSL-ISV-94-0096

References in corpus (3)

• CTEQ Parton Distributions and Flavor Dependence of Sea Quarks
• Optimization of R(e+e-) and "Freezing" of the QCD Couplant at Low Energies
• Next-to-Leading Order QCD Corrections to Jet Cross Sections and Jet Rates in Deeply Inelastic Electron Proton Scattering

Cited by in corpus (7)

• QCD Corrections to Inelastic $J/\psi$ Photoproduction
• Soft Colour Interactions as the Origin of Rapidity Gaps in DIS
• Dijet Production at HERA in Next-to-Leading Order
• Measurement of ${\alpha }_S$ from Jet Rates in Deep Inelastic Scattering at HERA
• Fixing the renormalisation scheme in NNLO perturbative QCD using conformal limit arguments
• Scale Optimisation and Event Shapes in Deep-Inelastic Scattering
• Differences between Monte Carlo models for DIS at small-x and the relation to BFKL dynamics