S. Durr et J. Kambor, Two-point function of strangeness-carrying vector-currents in two-loop Chiral Perturbation Theory, NUCL PH B-P, 86, 2000, pp. 220-223
We present our calculation of the correlator [T{VsVsdagger}] between two ex
ternal vector-currents with the quantum-numbers of a charged kaon. The reno
rmalized expression to O(p(6)) in SU(3) x SU(3) standard chiral perturbatio
n theory is finite and scale-independent. The result is used to determine,
via an IMFESR, the phenomenologically relevant finite O(p(6))-counterterm c
ombination Q(V) in a way which is not sensitive to isospin breaking.