Full contributions of dimension-three and -four QCD-vacuum condensates to current-current correlation functions and Feynman amplitudes

E. Bagan, M. R. Ahmady, V. Elias, T. G. Steele

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

Abstract

An improved "Feynman rule" approach is presented for evaluating quark- and gluon-condensate contributions to correlation functions to all orders in the quark mass parameter m. Although plane-wave and coordinate-space approaches are known to yield differing expressions for the gluon-condensate contributions to the quark propagator, the heavy-quark expansion relationship between gluon and heavy-quark condensates is shown to be insensitive to these differences. © 1993.
Original languageEnglish
Pages (from-to)151-156
JournalPhysics Letters B
Volume305
Issue number1-2
DOIs
Publication statusPublished - 6 May 1993

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