Chiral Perturbation Theory with Photons and Leptons

Details Chiral Perturbation Theory with Photons and Leptons Chiral Perturbation Theory with Photons and Leptons

1999-12-22

arxiv.org/abs/hep-ph/9912462v1

PiN Newslett.15:189-192,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

6pages, Latex, Talk given at the 8th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon, Zuoz,

Scientific paper

I discuss a low-energy effective field theory which permits the full
treatment of isospin-breaking effects in semileptonic weak interactions. In
addition to the pseudoscalars and the photon, also the light leptons have to be
included as dynamical degrees of freedom in an appropriate chiral Lagrangian. I
describe the construction of the local action at next-to-leading order.

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