nLab Cabibbo anomaly





apparent observed violation of unitarity of the CKM matrix


Statistical significance

statistical significance:

>4σ \gt 4\sigma (Belfatto-Beradze-Berezhiani 19)


  • Benedetta Belfatto, Revaz Beradze, Zurab Berezhiani, The CKM unitarity problem: A trace of new physics at the TeV scale?, Eur. Phys. J. C 80, 149 (2020) (arXi:1906.02714, arXiv:10.1140/epjc/s10052-020-7691-6)

  • Yuval Grossman, Emilie Passemar, Stefan Schacht, On the Statistical Treatment of the Cabibbo Angle Anomaly (arXiv:1911.07821)

  • Matthew Kirk, Cabibbo anomaly versus electroweak precision tests: An exploration of extensions of the Standard Model, Phys. Rev. D 103, 035004 (2021) (arXiv:2008.03261)

A leptoquark model meant to address all of the flavour anomalies, the (g-2)-anomaly and the Cabibbo anomaly at once:

  • David Marzocca, Sokratis Trifinopoulos, A Minimal Explanation of Flavour Anomalies: B-Meson Decays, Muon Magnetic Moment, and the Cabbibo Angle (arXiv:2104.05730)

See also:

Last revised on July 7, 2022 at 07:33:39. See the history of this page for a list of all contributions to it.