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arXiv · 0710.5432

Electromagnetic low-energy constants in ChPT

Christoph Haefeli·Mikhail A. Ivanov·Martin Schmid
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Abstract

We investigate three-flavour chiral perturbation theory including virtual photons in a limit where the strange quark mass is much larger than the external momenta and the up and down quark masses, and where the external fields are those of two-flavour chiral perturbation theory. In particular we work out the strange quark mass dependence of the electromagnetic two-flavour low-energy constants C and k_i. We expect that these relations will be useful for a more precise determination of the electromagnetic low-energy constants.

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Christoph Haefeli, Mikhail A. Ivanov, Martin Schmid. 2007-10-29. Electromagnetic low-energy constants in ChPT. https://doi.org/10.1140/epjc%2Fs10052-007-0493-2

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