Skip to content

K -> pi pi Electroweak Penguins in the Chiral Limit

V. Cirigliano, J. F. Donoghue, E. Golowich, K. Maltman

hep-pharXiv:hep-ph/0209332

Abstract

We report on dispersive and finite energy sum rule analyses of the electroweak penguin matrix elements < (pi pi) | Q7,8 | K > in the chiral limit. We accomplish the correct perturbative matching (scale and scheme dependence) at NLO in alphas, and we describe two different strategies for numerical evaluation.

Create a lesson