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. © 1995.
Nason, P., Palassini, M. (1995). Direct instanton effects in current-current correlators. NUCLEAR PHYSICS. B, 444(1-2), 310-330 [10.1016/0550-3213(95)00082-4].
Direct instanton effects in current-current correlators
Nason, P;
1995
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. © 1995.
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