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Electromagnetism in nonleptonic weak interactions

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	Ecker, Gerhard; Isidori, Gino; Müller, Guido; Neufeld, Helmut; Pich Zardoya, Antonio Perfil
	This document is a artículoDate2000
	Este documento está disponible también en : http://hdl.handle.net/10550/42413
	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 DeltaS = 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 --> pi pi decays.
	Ecker, Gerhard Isidori, Gino Müller, Guido Neufeld, Helmut Pich Zardoya, Antonio 2000 Electromagnetism in nonleptonic weak interactions Nuclear Physics B 591 1-2 419 434
	http://dx.doi.org/10.1016/S0550-3213(00)00568-X