The NNLO QCD analysis of the CCFR data for xF_3: is there still the room for the twist-4 terms?

A. L. Kataev; G. Parente; A. V. Sidorov

doi:10.1016/S0920-5632(99)00642-8

paper

The NNLO QCD analysis of the CCFR data for xF_3: is there still the room for the twist-4 terms?

arXiv:hep-ph/9904332 · doi:10.1016/S0920-5632(99)00642-8

Abstract

The results of the more detailed NNLO QCD analysis of the CCFR data for $x F_{3}$ SF are presented. The factorization scale uncertainties are analysed. The NNLO results for $a l p h a_{s} (M_{Z})$ and twist-4 contributions are obtained. Despite the fact that the amplitude of the $x$ -shape of the twist-4 factor is consequently decreasing at the NLO and NNLO, our new QCD analysis seems to reveal the remaining twist-4 structure at the NNLO level. The definite N $^{3}$ LO uncertainties are fixed using the [0/2] PadÃ© resummation technique.

LaTeX, 3 pages, 1 figure; to be published in the Proceedings of DIS99 Workshop, Zeuthen, April 19-23; some technical shortcomings are fixed in the file, 2 referencies corrected