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SUMMARY:The Mystery of the Missing Mixing Angle
DTSTART:20260611T060000Z
DTEND:20260611T070000Z
DTSTAMP:20260704T013900Z
UID:indico-event-17310@indico.global
DESCRIPTION:Speakers: Jordy de Vries\n\nAll good things come in threes. Th
 e Standard Model takes this to heart and contains three generations of qua
 rks. The weak interaction can transmute one generation into another. Each 
 such transition is governed by a quark mixing angle\, and while the Standa
 rd Model does not predict their values\, it does insist that they fit toge
 ther in clean unitarity relations. The most precise extractions of the up
 ‑quark sector mixing angles now appear to violate these relations: the s
 o‑called Cabibbo angle anomaly. Whether this is a crack in the Standard 
 Model or a mirror held up to our theoretical machinery is not yet clear. T
 he optimist sees a hint of new physics\; the pessimist blames the difficul
 t radiative corrections in meson\, nucleon\, and nuclear beta decays. In t
 his talk I will play both sides and discuss how beyond‑the‑Standard‑
 Model scenarios could explain the anomaly\, and how improved control of ra
 diative corrections reshapes the picture.\n\nhttps://indico.global/event/1
 7310/
URL:https://indico.global/event/17310/
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