Article ID Journal Published Year Pages File Type
1848109 Nuclear Physics B - Proceedings Supplements 2007 4 Pages PDF
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 |Vus|. Using our determination |Vus|=0.226±0.005 together with those coming from other sources we test the unitarity of the CKM matrix.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics