Matching the Electroweak Penquins Q_7 and Q_8
  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. 
Elvira Gamiz (Granada), Joaquim Prades (Granada), and Johan Bijnens   (Lund)