Direct Instanton Effects in Current-Current Correlators

Abstract

We compute the effect of small-size instantons on the coefficient function of the chiral condensate in the operator product expansion of current-current correlators. Furthermore, we also compute the instanton corrections associated with four-quark and six-quark operators in the factorization approximation. We discuss the phenomenological implications of our result.

24 pages, Latex

References in corpus (2)

• Instanton contributions to the $\tau$ decay widths
• Small-Size Instanton Corrections to the $\tau$ Hadronic Width

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