Speaker
Antonio Rodriguez Sanchez
(IJCLab)
Description
Four-quark operators mediate non-leptonic kaon decays and play an important role in inclusive QCD observables. Using their symmetry transformations and the known properties of QCD at low energies, we re-derive and extend generic relations among matrix elements and study their phenomenological implications. They include a determination of the electroweak-penguin contributions to eps'/eps based on hadronic tau-decay data and a study of the interplay of those relations with recent lattice data, which can be used to test the accuracy of large-Nc based estimates of matrix elements and to improve the predictive power in the tau sector.
Primary authors
Antonio Pich
(IFIC)
Antonio Rodriguez Sanchez
(IJCLab)
