Observation of $B^0\raωK^0$, $B^+\raηπ^+$, and $B^+\raηK^+$ and Study of Related Decays

Abstract

We present measurements of branching fractions and charge asymmetries for seven B-meson decays with an eta, eta' or omega meson in the final state. The data sample corresponds to 89 million BBbar pairs produced from e+e- annihilation at the Upsilon(4S) resonance. We measure the following branching fractions in units of 10^{-6}: B(etapi+)=5.3+/-1.0+/-0.3, B(etaK+)=3.4+/-0.8+/-0.2, B(etaK0)=2.9+/-1.0+/- 0.2 (<5.2, 90% C.L.), B(eta'pi+=2.7+/-1.2+/-0.3 (<4.5, 90% C.L.), B(omegapi+)=5.5+/-0.9+/-0.5, B(omegaKp)=4.8+/-0.8+/-0.4, and B(omegaK0)=5.9+1.6-1.3+/-0.5. The charge asymmetries are A_ch(etapi+)=-0.44+/-0.18+/-0.01, A_ch(etaK+)=-0.52+/-0.24+/-0.01, A_ch(omegapi+)=0.03+/-0.16+/-0.01 and A_ch(omegaK+)=-0.09+/-0.17+/-0.01.

arXiv comment7 pages, 2 postscript figues, Submitted to PRL

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Cited by in corpus (16)

• Charmless $B\to PP$ decays using flavor SU(3) symmetry
• Observation of CP violation in B^0 -> eta' K^0 Decays
• Isospin-breaking effects on alpha extracted in B --> pi pi, rho rho, rho pi
• B Meson Decays to eta(')K*, eta(')rho,eta(')pi0, omegapi0, and phipi0
• Measurements of Branching Fractions and Time-Dependent CP-Violating Asymmetries in B to eta' K Decays
• Measurements of CP-Violating Asymmetries in B0 to a1(1260)^{+-} pi^{-+} Decays
• Charmless $B\to PP$ decays and the new physics effects in the minimal supergravity model
• Measurement of branching fractions and charge asymmetries in B+ decays to etapi+, etaK+, etarho+ and eta'pi+, and search for B0 decays to etaK0 and etaomega
• Measurements of Branching Fractions and CP Asymmetries in B-> etah Decays
• Study of high momentum eta' production in B -> eta' X_s
• Measurements of CP-Violating Asymmetries and Branching Fractions in B Decays to omegaK and omegapi
• Improved measurements of branching fractions and CP partial rate asymmetries for $B\to \omega K$ and $B\to \omega \pi$
• Evidence for B to K eta' gamma Decays at Belle
• Measurement of the Branching Fractions for $B\to \omega K$ and $B\to \omega \pi$
• Novel two-loop SUSY effects on CP asymmetry in $B\to \varphi K_s$
• Rare Hadronic B Decays