4 papers
The Drell-Levy-Yan Relation: ep vs Scattering to
J. Blümlein, V. Ravindran, W. L. van Neerven
We study the validity of a relation by Drell, Levy and Yan (DLY) connecting the deep inelastic structure (DIS) functions and the single-particle fragmentation functions in …
The Unpolarized Gluon Anomalous Dimension at Small x
J. Blümlein, V. Ravindran, W. L. van Neerven +1
We discuss the quantitative consequences of the resummation of the small-x contributions to the anomalous dimensions beyond next-to-leading order in alpha_s and up to next order in…
Relations among polarized and unpolarized splitting functions beyond leading order
J. Blümlein, V. Ravindran, W. L. van Neerven
The role of various symmetries in the evaluation of splitting functions and coefficient functions is discussed. The scale invariance in hard processes is known to be a guiding tool…
A Detailed Comparison of NLO QCD Evolution Codes
J. Blümlein, M. Botje, C. Pascaud +4
Seven next-to-leading order QCD evolution programs are compared. The deviations of the results due to different theoretical prescriptions for truncating the perturbative series are…