Theory of power corrections to deep inelastic scattering in quantum chromodynamics. (II). Q-4 effects; polarized target

E. V. Shuryak; A. I. Vainshtein

doi:10.1016/0550-3213(82)90377-7

Theory of power corrections to deep inelastic scattering in quantum chromodynamics. (II). Q^-4 effects; polarized target

E. V. Shuryak, A. I. Vainshtein

Physics and Astronomy (Twin Cities)

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252 Scopus citations

Abstract

The extension of our previous OPE calculations to Q^-4 effects, connected with twist-6 operators is discussed. A new type of interaction appears in this order between the struck quark and vacuum fluctuations characterized by the non-zero vacuum average values of (G_μν^a)² and ψψ, the so-called gluon and quark condensates. While the former interaction is absent for Born diagrams, the latter is probably essential, especially for electromagnetic longitudinal structure function. We also discuss the case of the polarized target, in which twist-3 operators enter together with the leading twist-2 ones. We find OPE coefficients for them and determine power Q^-2 corrections for polarized scattering.

Original language	English (US)
Pages (from-to)	141-158
Number of pages	18
Journal	Nuclear Physics, Section B
Volume	201
Issue number	1
DOIs	https://doi.org/10.1016/0550-3213(82)90377-7
State	Published - Jun 14 1982

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AB - The extension of our previous OPE calculations to Q-4 effects, connected with twist-6 operators is discussed. A new type of interaction appears in this order between the struck quark and vacuum fluctuations characterized by the non-zero vacuum average values of (Gμνa)2 and ψψ, the so-called gluon and quark condensates. While the former interaction is absent for Born diagrams, the latter is probably essential, especially for electromagnetic longitudinal structure function. We also discuss the case of the polarized target, in which twist-3 operators enter together with the leading twist-2 ones. We find OPE coefficients for them and determine power Q-2 corrections for polarized scattering.

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Theory of power corrections to deep inelastic scattering in quantum chromodynamics. (II). Q^-4 effects; polarized target

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