Theoretical Uncertainties in the QCD Evolution of Structure Functions and their Impact on $\alpha_s(M_Z^2)$
Abstract
The differences are discussed between various next-to-leading order prescriptions for the QCD evolution of parton densities and structure functions. Their quantitative impact is understood to an accuracy of 0.02\%. The uncertainties due to the freedom to choose the renormalization and factorization scales are studied. The quantitative consequences of the different uncertainties on the extraction of the strong coupling constant from scaling violations in deep--inelastic scattering are estimated for the kinematic regime accessible at HERA.
Cite
@article{arxiv.hep-ph/9609217,
title = {Theoretical Uncertainties in the QCD Evolution of Structure Functions and their Impact on $\alpha_s(M_Z^2)$},
author = {J. Blümlein and S. Riemersma and W. L. van Neerven and A. Vogt},
journal= {arXiv preprint arXiv:hep-ph/9609217},
year = {2015}
}
Comments
10 pages Latex, including 3 eps-figures, and a style file. To appear in: Proc. of the International Workshop: QCD and QED in Higher Orders, Rheinsberg, April, 1996, Nucl. Phys. {\bf B} (Proc. Suppl); The lay-out of the paper has been changed, one figure sent separately before has been bound in