Direct Instanton Effects in Current-Current Correlators
نویسندگان
چکیده
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. CERN-TH.7483/94 IFUM 483/FT November 1994 On leave of absence from INFN, Sezione di Milano, Italy.
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تاریخ انتشار 1994