Measurements of Branching Fractions and Time-Dependent CP-Violating Asymmetries in BηK Decays

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. Lett. 94, 191802 – Published 17 May 2005

Abstract

We present measurements of the BηK branching fractions; for B+ηK+ we measure also the time-integrated charge asymmetry Ach, and for B0ηKS0 the time-dependent CP-violation parameters S and C. The data sample corresponds to 232×106 BB¯ pairs produced by e+e annihilation at the Υ(4S). The results are B(BηK+)=(68.9±2.0±3.2)×106, B(B0ηK0)=(67.4±3.3±3.2)×106, Ach=0.033±0.028±0.005, S=0.30±0.14±0.02, and C=0.21±0.10±0.02, where the first error quoted is statistical and the second is systematic.

  • Figure
  • Figure
  • Received 8 February 2005

DOI:https://doi.org/10.1103/PhysRevLett.94.191802

©2005 American Physical Society

Authors & Affiliations

Click to Expand

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 94, Iss. 19 — 20 May 2005

Reuse & Permissions
Access Options

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×