Measurements of KL branching fractions and the CP violation parameter |η+|

T. Alexopoulos et al.
Phys. Rev. D 70, 092006 – Published 16 November 2004

Abstract

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(KLπ±eν)=0.4067±0.0011, B(KLπ±μν)=0.2701±0.0009, B(KLπ+ππ0)=0.1252±0.0007, B(KLπ0π0π0)=0.1945±0.0018, B(KLπ+π)=(1.975±0.012)×103, and B(KLπ0π0)=(0.865±0.010)×103, where statistical and systematic errors have been summed in quadrature. We also determine the CP violation parameter |η+| to be (2.228±0.010)×103. Several of these results are not in good agreement with averages of previous measurements.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
15 More
  • Received 1 June 2004

DOI:https://doi.org/10.1103/PhysRevD.70.092006

©2004 American Physical Society

Authors & Affiliations

Click to Expand

See Also

Measurements of semileptonic KL decay form factors

T. Alexopoulos et al. (The KTeV Collaboration)
Phys. Rev. D 70, 092007 (2004)

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 70, Iss. 9 — 1 November 2004

Reuse & Permissions
Access Options

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×