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arXiv · hep-ph/0510177

Hyperon Semileptonic Decays and CKM Unitarity

V. Mateu
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Abstract

We perform a new numerical analysis of hyperon semileptonic decays emphasizing the systematic uncertainties. The poor understanding of SU(3) symmetry breaking effects at second order in the vector form factor translates into a large error of |V(us)|. Using our determination |V(us)| = 0.226 +/- 0.005 together with those coming from other sources we test the unitarity of the CKM matrix.

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V. Mateu. 2005-11-03. Hyperon Semileptonic Decays and CKM Unitarity. https://arxiv.org/abs/hep-ph/0510177

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