Matching the Electroweak Penquins Q₇ and Q₈

Elvira Gamiz (Granada) , Joaquim Prades (Granada) , Johan Bijnens (Lund)

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classification ✦ hep-ph

keywords electroweakelementsmatchingmatrixadvancesalphaanalyticallychiral

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We report on recent advances on the computation of the matrix elements of the electroweak penguins Q_7 and Q_8 which are relevant for the Delta I=3/2 contribution to epsilon'_K in the chiral limit. The matching of scale and scheme dependences between Wilson coefficients and these matrix elements is done analytically at NLO in alpha_S.

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Matching the Electroweak Penquins Q₇ and Q₈

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