标题： 直接瞬子效应在电流-电流关联函数中 显示英文标题

标题： Direct Instanton Effects in Current-Current Correlators

摘要： 我们计算小尺寸瞬子对当前-当前关联函数的算符乘积展开中手征凝聚系数函数的影响。 此外，我们还计算了在因子化近似下与四夸克和六夸克算符相关瞬子修正。 我们讨论了我们结果的物理现象学意义。 显示英文摘要

摘要： 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.