Abstract
An expression for the structure function F 2 in the form of Bessel functions at small values of the Bjorken variable x is used. This expression was derived for a flat initial condition in the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution equations. The argument of the strong coupling constant was chosen in such a way as to annihilate the singular part of the anomalous dimensions in the next-to-leading-order of perturbation theory. This choice, together with the frozen and analytic versions of the strong coupling constant, is used to analyze combined data of the H1 and ZEUS Collaborations obtained recently for the structure function F 2.
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Original Russian Text © A.V. Kotikov, B.G. Shaikhatdenov, 2015, published in Yadernaya Fizika, 2015, Vol. 78, No. 6, pp. 563–566.
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Kotikov, A.V., Shaikhatdenov, B.G. Q 2 evolution of parton distributions at small values of x: Effective scale for combined H1 and ZEUS data on the structure function F 2 . Phys. Atom. Nuclei 78, 525–527 (2015). https://doi.org/10.1134/S1063778815030059
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DOI: https://doi.org/10.1134/S1063778815030059