Matching the Electroweak Penquins Q_7 and Q_8

Details Matching the Electroweak Penquins Q_7 and Q_8 Matching the Electroweak Penquins Q_7 and Q_8

2002-09-09

arxiv.org/abs/hep-ph/0209089v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk given by J.P. at XIV Rencontres de Blois, "Matter Anti-Matter Asymmetry", 18-24 June 2002, and by E.G. at QCD 200

Scientific paper

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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