Abstract
The KTev experiment was performed at Fermilab to determine the Cabibbo-Kobayashi-Maskawa parameter |Vus| based on new measurements of the six largest KL branching fractions and semileptonic forms factors. The |Vus| was found to be equivalent to 0.2252±0. 0008KTeV±0.0021ext , where the errors were from KTeV measurements and from external sources. The CP violation parameter |η+-|=(2.228±0.005fKTeV±0.009 ext) ×10-3 was determined using the measured branching fractions. The results indicate that the improved form factor measurements may help to reduce theoretical uncertainties in f+(0).
Original language | English (US) |
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Article number | 181802 |
Pages (from-to) | 181802-1-181802-4 |
Journal | Physical review letters |
Volume | 93 |
Issue number | 18 |
DOIs | |
State | Published - Oct 29 2004 |
ASJC Scopus subject areas
- General Physics and Astronomy