Abstract
Since order parameter Green Functions are a useful link between the OPE expansion and χPT we perform a calculation to the NLO in α s , working in the chiral limit, for all the 2 and 3 point ones. These Green Functions have no perturbative term in the chiral limit and thence their main contribution comes from the 〈 q ¯ q 〉 operator. They are free from infrared singularities.
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