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The Status of the Cabibbo Angle Anomaly

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Speaker(s) / Presenter(s):
Dr. Mikhail Gorchtein (Mainz University)
Unitarity of the Cabibbo-Kobayashi-Maskawa quark mixing matrix is a measure 
of completeness of the Standard Model, and a good tool for looking for its extensions.
In the past few years there have been major new developments in the extraction 
of the CKM matrix elements Vud and Vus from the experimental data. At present, a 
3-sigma unitarity deficit is observed, known as the Cabibbo angle anomaly (CAA). 
I review the main ingredients of CAA across hadronic and nuclear-structure dependent 
radiative corrections, and give an outlook to future developments in theory and experiment.
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