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

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

1999-04-14

arxiv.org/abs/hep-ph/9904332v2

Nucl.Phys.Proc.Suppl. 79 (1999) 93-95

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 3 pages, 1 figure; to be published in the Proceedings of DIS99 Workshop, Zeuthen, April 19-23; some technical shortcomi

Scientific paper

10.1016/S0920-5632(99)00642-8

The results of the more detailed NNLO QCD analysis of the CCFR data for $xF_3$ SF are presented. The factorization scale uncertainties are analysed. The NNLO results for $alpha_s(M_Z)$ 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] Pad\'e resummation technique.

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