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SUMMARY:C and CP violation in effective field theories and applications to
  eta-meson decays
DTSTART:20260413T140000Z
DTEND:20260413T150000Z
DTSTAMP:20260405T193000Z
UID:indico-event-929@indico.physik.uni-siegen.de
CONTACT:anshika.bansal@uni-siegen.de
DESCRIPTION:Speakers: Bastian Kubis (Uni. Bonn)\n\nThe light\, flavour-neu
 tral eta and eta' mesons are ideal test grounds for discrete symmetry test
 s\, and potential searches for new sources of CP violation.  While the op
 portunity to test simultaneous violation of P and CP in their decays is se
 verely limited by constraints from electric dipole moments\, there is also
  the perhaps unconventional possibility of CP violation by parity conserva
 tion\, but C violation.  The quest for sources of the simultaneous violat
 ion of C and CP symmetry was popular in the 1960s and has since been mostl
 y neglected. We revisit the operators that break C and CP for flavour-cons
 erving transitions in both the Standard Model effective field theory and t
 he low-energy effective field theory. Subsequently\, we match these quark 
 operators to light-meson physics using chiral perturbation theory.  Appli
 cations in particular to C-odd Dalitz-plot asymmetries in eta --> 3pi and 
 long-distance contributions to the rare semileptonic decays eta --> pi0 l+
  l- are also discussed.\n\nhttps://indico.physik.uni-siegen.de/event/929/
LOCATION:D 308 (ENC)
URL:https://indico.physik.uni-siegen.de/event/929/
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