Abstract
We propose a hypothesis on the detailed structure for the representation of the conformal symmetry breaking term in the basic Crewther relation generalized in the perturbation theory framework in QCD renormalized in the \(\overline {MS} \) scheme. We establish the validity of this representation in the O(α 4 s ) approximation. Using the variant of the generalized Crewther relation formulated here allows finding relations between specific contributions to the QCD perturbation series coefficients for the flavor nonsinglet part of the Adler function D ns A for the electron-positron annihilation in hadrons and to the perturbation series coefficients for the Bjorken sum rule S Bjp for the polarized deep-inelastic lepton-nucleon scattering. We find new relations between the α 4 s coefficients of D ns A and S Bjp . Satisfaction of one of them serves as an additional theoretical verification of the recent computer analytic calculations of the terms of order α 4 s in the expressions for these two quantities.
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Prepared from an English manuscript submitted by the authors; for the Russian version, see Teoreticheskaya i Matematicheskaya Fizika, Vol. 170, No. 2, pp. 174–187, February, 2012.
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Kataev, A.L., Mikhailov, S.V. New perturbation theory representation of the conformal symmetry breaking effects in gauge quantum field theory models. Theor Math Phys 170, 139–150 (2012). https://doi.org/10.1007/s11232-012-0016-7
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DOI: https://doi.org/10.1007/s11232-012-0016-7