Lepton Flavour Universality tests and determination of $|V_{us}|$ using the HFLAV-Tau branching fractions fit
Abstract
We present an update of the lepton flavour universality (LFU) tests and of the determination of the CKM matrix element \Vus using the latest HFLAV-Tau global fit of $\tau$ branching fractions. The fit accounts for correlations and dependencies on common external inputs. We investigate the impact of using next-to-leading-order QED corrections in the LFU tests.
Fields of Study & Subjects
Particle physics theoretical and experimental studies
Quantum Chromodynamics and Particle Interactions
Particle Detector Development and Performance
Publication details
- Journal / source
- European Physical Society Conference on High Energy Physics (EPS-HEP)
- Pages
- 325–325
- Publication date
- 30 January 2026
- Language
- EN