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Two-point function of strangeness-carrying vector-currents in two-loop Chiral Perturbation Theory

Stephan Dürr·Joachim Kambor
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Abstract

We present our calculation of the correlator $ $ between two external vector-currents with the quantum-numbers of a charged kaon. The renormalized expression to $O(p^6)$ in $SU(3) \times SU(3)$ standard chiral perturbation theory is finite and scale-independent. The result is used to determine, via an IMFESR, the phenomenologically relevant finite $O(p^6)$-counterterm combination $Q_V$ in a way which is not sensitive to isospin breaking.

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Stephan Dürr, Joachim Kambor. 1999-09-11. Two-point function of strangeness-carrying vector-currents in two-loop Chiral Perturbation Theory. https://doi.org/10.1016/s0920-5632(00)00568-5

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