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SUMMARY:Matching the Electroweak Penguins Q_7 and Q_8
DTSTART;VALUE=DATE-TIME:20020131T113000Z
DTEND;VALUE=DATE-TIME:20020131T123000Z
DTSTAMP;VALUE=DATE-TIME:20261109T004055Z
UID:indico-event-1250@indico.ific.uv.es
DESCRIPTION:Exact analytical expressions for the Delta S=1 coupling Im(G_E
 ) in terns of observable spectral functions are given. This coupling deter
 mines the size of the Delta I =3/2 contributions to epsilon '. We show how
  the scheme- and scale dependences vanish to all orders in 1/N_c and NLO i
 n alpha_S explicitly both for Q_7 and Q_8. Numerical results are derived f
 or both Q_7 and Q_8 from the tau-data and known results on scalar spectral
  functions. In particular\, we study the effect of all higher dimensional 
 operators. The coefficients of the leading operators in the OPE of the nee
 ded correlators are derived to NLO in alpha_s.\n\nhttps://indico.ific.uv.e
 s/event/1250/
LOCATION:Edf. Institutos de Investigación Sala Seminarios IFIC
URL:https://indico.ific.uv.es/event/1250/
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