Measurements of Branching Fractions and Time-Dependent CP-Violating Asymmetries in B to eta' K Decays

Abstract

We present measurements of the B -> eta' K branching fractions;for B+ -> eta' K+ we measure also the time-integrated charge asymmetry Ach, and for B0 -> eta' K0S the time dependent CP-violation parameters S and C. The data sample corresponds to 232 million B Bbar pairs produced by e+ e- annihilation at the Upsilon(4S). The results are BF(B+ -> eta' K+) = (68.9 +- 2.0 +- 3.2) * 10^-6, BF(B0 -> eta' K0) = (67.4 +- 3.3 +- 3.2) * 10^-6, Ach = 0.033 +- 0.028 +- 0.005, S=0.30 +- 0.14 +- 0.02, C=-0.21 +- 0.10 +- 0.02, where the first error is statistical and the second systematic.

7 pages, 2 postscript figures, submitted to Phys. Rev. Letters

References in corpus (23)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• The BABAR Detector
• QCD factorization for B->PP and B->PV decays
• CP Asymmetries in B Decays with New Physics in Decay Amplitudes
• Measurement of the CP-Violating Asymmetry Amplitude sin2beta
• Flavor-Singlet B-Decay Amplitudes in QCD Factorization
• Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System
• Measuring the CP Angle βin Hadronic b\to s Penguin Decays
• A Study of Time-Dependent CP-Violating Asymmetries and Flavor Oscillations in Neutral B Decays at the Upsilon(4S)
• B to eta' + X and The QCD Anomaly
• Impact of tag-side interference on time-dependent CP asymmetry measurements using coherent B0 B0bar pairs
• SU(3) Relations and the CP Asymmetries in B Decays to ${\eta }^{\prime }{K}_S$, $\varphi K_S$ and $K^{+}{K}^{-}{K}_S$
• Measurement of Time-Dependent CP-Violating Asymmetries in B0 --> phi Ks0, K+ K- Ks0, and eta' Ks0 Decays
• Two-Body Charmless B Decays Involving eta and eta'
• B -> K eta(') decay in perturbative QCD
• B Meson Decays to eta(')K*, eta(')rho,eta(')pi0, omegapi0, and phipi0
• Revisiting Charmless Two-Body B Decays involving ${\eta }^{\prime }$ and $\eta$
• Correlated bounds on CP asymmetries in $B^0\to {\eta }^{\prime }{K}_S$
• Measurements of CP-violating Asymmetries and Branching Fractions in B Meson Decays to eta' K
• Updated Analysis of Some Two-Body Charmless B Decays
• The gluon/charm content of the eta' meson and instantons
• Observation of $B^0\raωK^0$, $B^+\raηπ^+$, and $B^+\raηK^+$ and Study of Related Decays
• Searches for B0 Decays to Combinations of Charmless Isoscalar Mesons

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