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Theory of gauge-invariant operators: Their renormalization and S-matrix elements

Journal Article · · Phys. Rev., D; (United States)
The renormalization of gauge-invariant operators in Yang-Mills theories is discussed. An important property of the relevant Ward identities is used to show that the coupling of a subset of these (those which do not vanish by the equations of motion) to other operators takes a simple form. It is also shown that the renormalization constants appropriate to this set are independent of the gauge parameter. It is demonstrated that in certain important applications, for example the calculation of deep-inelastic scattering using the operator-product expansion, only the operators in this set are physically relevant.
Research Organization:
Department of Natural Philosophy, The University, Glasgow, G12 8QQ, Scotland
OSTI ID:
6679943
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 18:4; ISSN PRVDA
Country of Publication:
United States
Language:
English