A Determination of the CKM parameter |V(us)|

Alexopoulos, T.

doi:10.1103/PhysRevLett.93.181802

A Determination of the CKM parameter |V(us)|

Journal Article · Tue Jun 01 04:00:00 EDT 2004 · Phys.Rev.Lett.

DOI:https://doi.org/10.1103/PhysRevLett.93.181802· OSTI ID:1862994

Alexopoulos, T.

We present a determination of the CKM parameter |Vus| based on new measurements of the six largest KL branching fractions and semileptonic form factors by the KTeV (E832) experiment at Fermilab. We find |Vus| = 0.2252 +- 0.0008(KTeV) +- 0.0021(ext), where the errors are from KTeV measurements and from external sources. We also use the measured branching fractions to determine the CP violation parameter |eta+-| = [2.228 +- 0.005(KTeV) +- 0.009(ext)]E-3.

Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Contributing Organization:: KTeV

DOE Contract Number:: AC02-07CH11359

OSTI ID:: 1862994

Report Number(s):: FERMILAB-PUB-04-153-E; arXiv:hep-ex/0406001; oai:inspirehep.net:651414

Journal Information:: Phys.Rev.Lett., Journal Name: Phys.Rev.Lett. Vol. 93

Country of Publication:: United States

Language:: English

References (9)

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