The pionic beta decay in chiral perturbation theory

Details The pionic beta decay in chiral perturbation theory The pionic beta decay in chiral perturbation theory

2002-09-19

arxiv.org/abs/hep-ph/0209226v1

Eur.Phys.J.C27:255-262,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 1 figure, latex file, uses EPJC macros

Scientific paper

10.1140/epjc/s2002-01093-2

Within the framework of chiral perturbation theory with virtual photons and leptons, we present an updated analysis of the pionic beta decay including all electromagnetic contributions of order e**2 p**2. We discuss the extraction of the Cabibbo-Kobayashi-Maskawa matrix element |Vud| from experimental data. The method employed here is consistent with the analogous treatment of the Kl3 decays and the determination of |Vus|.

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