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SUMMARY:The Delta I=1/2 Rule in the Chiral Limit
DTSTART;VALUE=DATE-TIME:19981211T113000Z
DTEND;VALUE=DATE-TIME:19981211T123000Z
DTSTAMP;VALUE=DATE-TIME:20260627T175225Z
UID:indico-event-1099@indico.ific.uv.es
DESCRIPTION:We discuss the matching between long-distance and short-distan
 ce at next-to-leading in $1/N_c$ and show how the scheme-dependence from t
 he two-loop renormalization group running can be treated. We then use this
  method to study the three $O(p^2)$ terms contributing to kaon decays\, na
 mely the usual octet and 27-plet derivative terms as well as the weak mass
  term using the Extended Nambu--Jona-Lasinio model as the low energy appro
 ximation. We also discuss subtleties in the momentum routing in the low en
 ergy theory and a problem in separating factorizable and non-factorizable 
 contributions from the $Q_6$ operator in the chiral limit. We update our e
 arlier results on $B_K$ parameter as well.\n\nhttps://indico.ific.uv.es/ev
 ent/1099/
LOCATION:Dpto. de Fisica Teorica (UVEG) Sala Seminarios
URL:https://indico.ific.uv.es/event/1099/
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