Wave function and CKM renormalization

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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11 pages. Based on a talk given at Quark2002, Valday, Russia, June 2002. To appear in the proceedings

Scientific paper

In this presentation we clarify some aspects of the LSZ formalism and wave function renormalization for unstable particles in the presence of electroweak interactions when mixing and CP violation are considered. We also analyze the renormalization of the CKM mixing matrix which is closely related to wave function renormalization. The effects due to the electroweak radiative corrections that are described in this work are small, but they will need to be considered when the precision in the measurement of the charged current sector couplings reaches the 1% level. The work presented here is done in collaboration with Julian Manzano and Pere Talavera.

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