Hyperon Semileptonic Decays and CKM Unitarity

6533b7cffe1ef96bd1258f76

RESEARCH PRODUCT

Hyperon Semileptonic Decays and CKM Unitarity

subject

Physics Nuclear physics Nuclear and High Energy Physics Particle physics High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph)Unitarity Cabibbo–Kobayashi–Maskawa matrix Hyperon Form factor (quantum field theory)FOS: Physical sciences Symmetry breaking Atomic and Molecular Physics and Optics

description

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.

year	journal	country	edition	language
2005-10-13

https://dx.doi.org/10.48550/arxiv.hep-ph/0510177

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