The NLO DGLAP extraction of ${\alpha }_s$ and higher twist terms from CCFR $x{F}_3$ and $F_2$ structure functions data for $\nu N$ DIS

Abstract

We performed the detailed NLO analysis of the combined CCFR $x{F}_3$ and $F_2$ structure functions data and extracted the value of ${\alpha }_s$, parameters of distributions and higher-twist (HT) terms using the direct solution of the DGLAP equation. The value of ${\alpha }_s(M_Z)=0.1222\pm 0.0048(exp)\pm 0.0040(theor)$ was obtained. The result has larger central value and errors, than the original result of the CCFR collaboration, in view of the incorporation into the fits of the HT terms as the free model independent parameters. The $x$-shapes of the HT contributions to $x{F}_3$ and $F_2$ are in agreement with the results of other model-independent extractions and are in qualitative agreement with the predictions of the infrared renormalon model. We also argue that the low $x$ CCFR data might have the defects, since their inclusion into the fits led to the following low $x$-behaviour of the gluon distribution $xG(x,9Ge{V}^2)\sim x^{0.092\pm 0.0073}$, in contradiction with the results of its extraction from low $x$ HERA data.

10 pages, LATEX, 2 figures (EPS), report-no added, English improved, misprints corrected, minor changes of the text

References in corpus (4)

• An Improved Determination of ${\alpha }_S$ From Neutrino-Nucleon Scattering
• Can the QCD running coupling have a causal analyticity structure?
• Next-to-next-to-leading order QCD analysis of the revised CCFR data for xF_3 structure function and the higher twist contributions
• Phenomenology of Power Corrections in Fragmentation Processes in e^+ e^- Annihilation

Cited by in corpus (25)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Parton Distribution Functions, ${\alpha }_s$ and Heavy-Quark Masses for LHC Run II
• The Theory of Deeply Inelastic Scattering
• Higher twists and ${\alpha }_s(M_Z)$ extractions from the NNLO QCD analysis of the CCFR data for $x{F}_3$ structure function
• Nuclear PDFs from neutrino deep inelastic scattering
• Higher Twist Contributions to the Structure Functions F_2^p(x,Q^2) and F_2^d(x,Q^2) at Large x and Higher Orders
• Next-to-next-to-leading order QCD analysis of spin-dependent parton distribution functions and their uncertainties: Jacobi polynomials approach
• Nucleon spin structure functions at NNLO in the presence of target mass corrections and higher twist effects
• The Jacobi Polynomials QCD analysis for the polarized structure function
• Twist decomposition of nonlocal light-cone operators II: General tensors of 2nd rank
• Analytical approaches to the determination of spin-dependent parton distribution functions at NNLO approximation
• N^3LO fits to xF_3 data : ${\alpha }_s$ vs 1/Q^2 contributions
• Impact of Higher Order and Soft Gluon Corrections on the Extraction of Higher Twist Effects in DIS
• Predictions for Neutrino Structure Functions
• The NNLO non-singlet QCD analysis of parton distributions based on Bernstein polynomials
• QCD analysis of structure functions in deep inelastic neutrino-nucleon scattering without using the orthogonal polynomials approach
• The NLO DGLAP extraction of alpha_s and higher twist terms from CCFR xF_3 and F_2 structure functions data: results and scale dependence
• Determination of the high-twist contribution to the structure function $x{F}_3^{\nu N}$
• The NNLO QCD analysis ofthe CCFR data for $x{F}_3$: $Q^2$-dependence of the parameters
• $x{F}_3(x,Q^2)$ Structure Function and Gross-Llewellyn Smith Sum Rule with Nuclear Effect and Higher Twist Correction
• The constraints on the non-singlet polarised parton densities from the infrared-renormalon model
• Highlights of Short Baseline Physics at a Neutrino Factory
• Status of Deeply Inelastic Parton Distributions
• QCD analysis of valence structure functions using deep inelastic lepton-nucleon scattering
• Nucleon spin structure functions, considering target mass correction and higher twist effects at the NNLO accuracy and their transverse momentum dependence