Electromagnetic low-energy constants in ChPT

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.

18 pages, 4 Tables, 2 figures

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Cited by in corpus (16)

• QED in finite volume and finite size scaling effect on electromagnetic properties of hadrons
• Topological Susceptibility and QCD Axion Mass: QED and NNLO corrections
• Chiral expansions of the pi0 lifetime
• Electromagnetic corrections in eta --> 3 pi decays
• Neutrinoless double beta decay in effective field theory: the light Majorana neutrino exchange mechanism
• Aspects of meson-baryon scattering in three- and two-flavor chiral perturbation theory
• Isospin breaking in the pion-nucleon scattering lengths
• Rescattering effects in eta {\to} 3pi decays
• On the pion decay constant
• Integrating out strange quarks in ChPT: terms at order p^6
• Two-loop representations of low-energy pion form factors and pi-pi scattering phases in the presence of isospin breaking
• Isospin breaking in the phases of the Ke4 form factors
• Isospin-Breaking quark condensates in Chiral Perturbation Theory
• Relations between SU(2)- and SU(3)-LECs in chiral perturbation theory
• On the low energy end of the QCD spectrum
• Integrating out the heaviest quark in N--flavour ChPT