Hyperon semileptonic decays and CKM unitarity

被引：1
|
作者：
Mateu, V. [1 ]
机构：
[1] Univ Valencia, CSIC, IFIC, Dept Fis Teor, E-46071 Valencia, Spain
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2007年 / 164卷
关键词：
D O I：
10.1016/j.nuclphysbps.2006.11.065
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
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 vertical bar V-us vertical bar. Using our determination vertical bar V-us vertical bar = 0.226 +/- 0.005 together with those coming from other sources we test the unitarity of the CKM matrix.
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页码：75 / 78
页数：4
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