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Título : Electromagnetism in nonleptonic weak interactions
Autor : Ecker, Gerhard, Isidori, Gino, Müller, G., Neufeld, Helmut, Pich, Antonio
Palabras clave : Chiral perturbation theory
Isospin violation
Nonleptonic weak interactions
Effective lagrangians
Fecha de publicación : 18-Dec-2000
Editor: Elsevier
Citación : Nuclear Physics B 591(1-2): 419-434 (2000)
Resumen: We construct a low-energy effective field theory that permits the complete treatment of isospin-breaking effects in nonleptonic weak interactions to next-to-leading order. To this end, we enlarge the chiral Lagrangian describing strong and ΔS=1 weak interactions by including electromagnetic terms with the photon as additional dynamical degree of freedom. The complete and minimal list of local terms at next-to-leading order is given. We perform the one-loop renormalization at the level of the generating functional and specialize to K→ππ decays.
Descripción : 16 páginas, 1 figura.-- PACS: 11.30.Rd; 13.25.Es; 13.40.Ks.-- arXiv:hep-ph/0006172v2
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ISSN: 0550-3213
DOI: 10.1016/S0550-3213(00)00568-X
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