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VERSION:2.0
PRODID:-//CERN//INDICO//EN
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SUMMARY:Chiral Perturbation Theory with Virtual Photons and Leptons
DTSTART;VALUE=DATE-TIME:19991028T093000Z
DTEND;VALUE=DATE-TIME:19991028T103000Z
DTSTAMP;VALUE=DATE-TIME:20261011T113947Z
UID:indico-event-1139@indico.ific.uv.es
DESCRIPTION:I discuss a low-energy effective field theory which allows the
  full treatment of isospin-breaking effects in semileptonic weak interacti
 ons. To this end\, the particle spectrum of chiral perturbation theory wit
 h virtual photons is enlarged by including also the light leptons as dynam
 ical degrees of freedom. The additional one-loop divergences generated by 
 the presence of virtual leptons are determined by using super-heat-kernel 
 techniques. The full list of associated counterterms is given. I illustrat
 e the use of this effective theory by applying it to the decays $\\pi \\ri
 ghtarrow \\ell \\nu$ and $K \\rightarrow \\ell \\nu$. (See also hep-ph/990
 9284 for further information.)\n\nhttps://indico.ific.uv.es/event/1139/
LOCATION:Edf. Institutos de Investigacion Sala de Juntas del IFIC
URL:https://indico.ific.uv.es/event/1139/
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