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SUMMARY:A Large N_c Hadronic Model
DTSTART;VALUE=DATE-TIME:20050201T103000Z
DTEND;VALUE=DATE-TIME:20050201T113000Z
DTSTAMP;VALUE=DATE-TIME:20261113T111646Z
UID:indico-event-1407@indico.ific.uv.es
DESCRIPTION:We present a large N_c hadronic model with a single hadronic s
 tate per channel and construct all two\, three-point and some four-point G
 reen's functions in the chiral limit. These Green's functions contain all 
 the constraints from CHPT at NLO\, the large N_c structure\, and the maxim
 um of the short-distance constraints\, namely\, OPE and Brodsky-Lepage-lik
 e (or quark-counting-rule) ones. We point out a general problem for large 
 N_c hadronic models that prevents from imposing all those short-distance c
 onstraints on three-point and higher Green's functions with a finite numbe
 r of resonances. This problem also exists for Green's functions that vanis
 h to all orders in massless perturbative QCD. We also give the complete re
 sult outside the chiral limit for two-point functions\, and some three-poi
 nt ones in the chiral limit. Three-point functions outside the chiral limi
 t are under way. We also comment on the application to calculate the \\hat
  B_K parameter in the chiral limit for which we present preliminary result
 s and outside the chiral limit. (NOTE: the seminar will take place at 12:0
 0)\n\nhttps://indico.ific.uv.es/event/1407/
LOCATION:Edf. Institutos de Investigación Sala Seminarios IFIC
URL:https://indico.ific.uv.es/event/1407/
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