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arXiv · hep-ph/0209332

K -> pi pi Electroweak Penguins in the Chiral Limit

V. Cirigliano·J. F. Donoghue·E. Golowich·K. Maltman
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Abstract

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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V. Cirigliano, J. F. Donoghue, E. Golowich, K. Maltman. 2002-09-27. K -> pi pi Electroweak Penguins in the Chiral Limit. https://doi.org/10.1016/s0920-5632(03)01846-2

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