Delta S = 2 transitions: LO and NLO operators

por Oscar Catà (Universitat Autònoma de Barcelona e IFAE)

viernes 14 may. 2004 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

I will present a recent determination of the K0-K0(bar) matrix element, including the potentially sizeable NLO operators in the weak hamiltonian. Some of the non-perturbative contributions are also evaluated, showing how the interplay between perturbative and non-perturbative pieces indeed cancels any scale and scheme dependence.