Determination of |Vus| from the tau lepton branching fractions
Alberto Lusiani
TL;DR
This paper calculates the CKM matrix element |Vus| using tau lepton decay data, comparing results with kaon decay measurements and CKM unitarity to improve understanding of quark mixing.
Contribution
It introduces updated tau branching fraction averages to determine |Vus| and compares these with other methods for consistency.
Findings
Consistent |Vus| values from tau decays and kaon decays
Improved precision in |Vus| determination
Validation of CKM unitarity constraints
Abstract
We determine the Cabibbo-Kobayashi-Maskawa matrix (CKM) element |Vus| in several different ways using updated preliminary HFAG averages for the tau lepton branching fractions and we compare the results with the determinations obtained from the kaon decays and from the unitarity of the CKM matrix.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research