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SUMMARY:Hyperon non-leptonic decays in relativistic ChPT with resonances
DTSTART;VALUE=DATE-TIME:20260903T150000Z
DTEND;VALUE=DATE-TIME:20260903T152500Z
DTSTAMP;VALUE=DATE-TIME:20260817T003409Z
UID:indico-contribution-31086@indico.ific.uv.es
DESCRIPTION:Speakers: Fernando Alvarado (RUB)\nThe non-leptonic decays of 
 hyperons constitute a longstanding theoretical problem. Motivated by recen
 t measurements from the BESIII collaboration\, we study these processes in
  Chiral Perturbation Theory in new Ref. [2604.00646]. We perform the first
  relativistic calculation of such decays and include the decuplet as an ex
 plicit degree of freedom. Moreover\, the contributions from the $1/2^−$ 
 and the $1/2^+$ resonance octets are incorporated at tree level. The unkno
 wn low-energy constants are fitted to the decay amplitudes. A good simulta
 neous fit of the s- and p-wave amplitudes is obtained with the caveat of n
 ot being very tightly constrained. The role of the resonances is found to 
 be crucial\, and consequences for further investigations are discussed.\n\
 nhttps://indico.ific.uv.es/event/8521/contributions/31086/
LOCATION:Universe 1001-Primera-1-1-1 - Paterna. Seminario
URL:https://indico.ific.uv.es/event/8521/contributions/31086/
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