K -> pi pi Electroweak Penguins in the Chiral Limit

Details K -> pi pi Electroweak Penguins in the Chiral Limit K -> pi pi Electroweak Penguins in the Chiral Limit

2002-09-27

arxiv.org/abs/hep-ph/0209332v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures. Contribution to QCD02, International Conference on Quantum Chromo-Dynamics, Montpellier (France), July 2-9

Scientific paper

10.1016/S0920-5632(03)01846-2

We report on dispersive and finite energy sum rule analyses of the
electroweak penguin matrix elements < (pi pi) | Q_{7,8} | K > in the chiral
limit. We accomplish the correct perturbative matching (scale and scheme
dependence) at NLO in alpha_s, and we describe two different strategies for
numerical evaluation.

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