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X-WR-CALDESC:Events for LAPTh
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DTSTART:20240101T000000
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DTSTART;TZID=UTC:20250401T090000
DTEND;TZID=UTC:20250401T100000
DTSTAMP:20260624T235938
CREATED:20250329T122144Z
LAST-MODIFIED:20250401T085209Z
UID:10064-1743498000-1743501600@www.lapth.cnrs.fr
SUMMARY:Implications of $B^+ to K^+  ubar u$ under rank-one flavour violation hypothesis
DESCRIPTION:Speakers: Claudio Toni\nWe study the implications of the observed excess at Belle-II under the assumption of Rank-One Flavour Violation\, i.e. that New Physics couples to a single specific direction in flavour space. By varying this direction we perform analyses at the level of the low-energy EFT\, the SMEFT\, and with explicit mediators such as leptoquarks and colorless vectors. Among the various mediators\, the scalar leptoquarks $tilde{R}_2$ and $S_1$ offer the best fits of the Belle-II excess\, while being consistent with the other bounds. On the other hand\, colorless vectors are strongly constrained by meson mixing and resonance searches. In all cases we find that a flavour alignment close to the third generation is generically preferred.\nhttps://indico.in2p3.fr/event/36029/
URL:https://www.lapth.cnrs.fr/en/event/implications-of-b-to-k-ubar-u-under-rank-one-flavour-violation-hypothesis/
LOCATION:Salle de Sommets
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