The NLO DGLAP extraction of alphas and higher twist terms from CCFR xF3 and F2 structure functions data: results and scale dependence
S. I. Alekhin, A. L. Kataev
Abstract
We perform a detailed NLO analysis of the combined CCFR xF3 and F2 structure functions data and extract the value of alphas, parameters of distributions and higher-twist (HT) terms using a direct solution of the DGLAP equation. The value of alphas(MZ)=0.1222 0.0048 (exp) 0.0026 (theor) is obtained. Our results has a larger central value and errors than the original one of the CCFR collaboration due to model independent parameterization of the HT contributions. The dependence of HT contributions on the QCD renormalization scale is studied.
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