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SUMMARY:Missing-energy searches as a probe of QCD axion and anomalous gaug
 e vectors
DTSTART:20260630T120000Z
DTEND:20260630T130000Z
DTSTAMP:20260717T114500Z
UID:indico-event-111@indico.zdv.uni-mainz.de
DESCRIPTION:Speakers: Claudio Toni (LAPTH Annecy)\n\nRecent measurements o
 f rare meson decays with missing-energy signatures from experiments such a
 s NA62 and Belle II provide strong constraints on new light\, weakly-coupl
 ed states beyond the Standard Model. While these processes are consistent 
 with neutrino final states\, they also offer sensitivity to a wide class o
 f new physics scenarios with invisible particles.We discuss two representa
 tive cases: the QCD axion and\, more generally\, axion-like particles (ALP
 s)\, and light spin-1 vector mediators coupled to anomalous currents. For 
 ALPs\, we show how public experimental results can be recast within an eff
 ective field theory framework to derive constraints on flavour-violating a
 xion-quark couplings. For the vector case\, we consider light gauge bosons
  coupled to anomalous electroweak currents and discuss the consistency and
  phenomenological implications of such interactions in EFT descriptions.\n
 \nhttps://indico.zdv.uni-mainz.de/event/111/
LOCATION:R. 05-127 (Lorentz-Room)
URL:https://indico.zdv.uni-mainz.de/event/111/
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