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DTSTAMP:20260719T084303Z
SUMMARY:HEP seminar: Matthew Monk (University of Cambridge) – Investigati
 ng the polarisation puzzle with B0(s) -> K*K* decays at LHCb
DESCRIPTION:Charmless decays of a B meson to two vector particles offer man
 y different avenues to explore the Standard Model. There has been a longst
 anding discrepancy between experimental measurements of the longitudinal p
 olarisation fractions in charmless B->VV decays\, both between the experim
 ental measurements of different decays and with SM predictions\, which has
  been dubbed the “polarisation puzzle”. In this talk\, I will present 
 results from a recent LHCb analysis (https://arxiv.org/abs/2512.05102)\, u
 pdating branching fraction and polarisation fraction measurements in both 
 Bd and Bs decays to a Kstar Kstarbar final state\, resulting in a 4.4 sigm
 a tension between theory and experiment.
URL:https://www.imperial.ac.uk/events/209212/hep-seminar-matthew-monk-unive
 rsity-of-cambridge-investigating-the-polarisation-puzzle-with-b0s-kk-decay
 s-at-lhcb/
DTSTART;TZID=Europe/London:20260515T133000
DTEND;TZID=Europe/London:20260515T143000
LOCATION:539\, Blackett Building\, South Kensington Campus\, Imperial Colle
 ge London\, London\, SW7 2AZ\, United Kingdom
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