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Global Electroweak Fit and Vector-Like Leptons in Light of the Cabibbo Angle Anomaly

The “Cabibbo Angle Anomaly” (CAA) originates from the disagreement between the CKM elements V$_{ud}$ and V$_{us}$ extracted from superallowed beta and kaon decays, respectively, once compared via CKM unitarity. It points towards new physics with a significance of up to 4 σ, depending on the theoreti...

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Detalles Bibliográficos
Autores principales: Crivellin, Andreas, Kirk, Fiona, Manzari, Claudio Andrea, Montull, Marc
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP12(2020)166
http://cds.cern.ch/record/2727098