Phys. Rev. D 70, 092006 (2004) [20 pages]Measurements of KL branching fractions and the CP violation parameter |η+-|Received 1 June 2004; published 16 November 2004 We present new measurements of the six largest branching fractions of the KL using data collected in 1997 by the KTeV experiment (E832) at Fermilab. The results are B(KL→π±e∓ν)=0.4067±0.0011, B(KL→π±μ∓ν)=0.2701±0.0009, B(KL→π+π-π0)=0.1252±0.0007, B(KL→π0π0π0)=0.1945±0.0018, B(KL→π+π-)=(1.975±0.012)×10-3, and B(KL→π0π0)=(0.865±0.010)×10-3, where statistical and systematic errors have been summed in quadrature. We also determine the CP violation parameter |η+-| to be (2.228±0.010)×10-3. Several of these results are not in good agreement with averages of previous measurements. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.70.092006
DOI:
10.1103/PhysRevD.70.092006
PACS:
13.25.Es, 13.20.Eb
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.