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arXiv · 0805.3063

NNLO QCD contributions to the flavor non-singlet sector of ${\bf {F_2(x,Q^2)}}$

Ali N. Khorramian·S. Atashbar Tehrani
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Abstract

We present the results of our QCD analysis for nonsinglet unpolarized quark distributions and structure function $F_2(x,Q^2)$. New parameterizations are derived for the nonsinglet quark distributions for the kinematic wide range of $x$ and $Q^2$. The analysis is based on the Jacobi polynomials expansion of the structure function. The higher twist contributions of proton and deuteron structure function are obtained in the large $x$ region. Our calculations for nonsinglet unpolarized quark distribution functions based on the Jacobi polynomials method are in good agreement with the other theoretical models. The values of $Λ_{QCD}$ and $α_s(M_z^2)$ are determined.

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Ali N. Khorramian, S. Atashbar Tehrani. 2008-12-25. NNLO QCD contributions to the flavor non-singlet sector of ${\bf {F_2(x,Q^2)}}$. https://doi.org/10.1103/physrevd.78.074019

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