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

Abstract

We present measurements of branching fractions and charge asymmetries for six B-meson decay modes with an eta or eta' meson in the final state. The data sample corresponds to 232 million BBbar pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- B Factory at SLAC. We measure the branching fractions (in units of 10^-6): B(B->etapi+)=5.1+/-0.6+/-0.3, B(B->etaK+)=3.3+/-0.6+/-0.3, B(B->etaK0)=1.5+/-0.7+/-0.1 (<2.5 at 90% C.L.), B(B->etarho+)=8.4+/-1.9+/-1.1, B(B->etaomega)=1.0+/-0.5+/-0.2 (<1.9 at 90% C.L.), and B(B->eta'pi+)=4.0+/-0.8+/-0.4, where the first uncertainty is statistical and second systematic. We also determine the charge asymmetries for the charged modes: Ach(B->etapi+)=-0.13+/-0.12+/-0.01, Ach(B->etaK+)=-0.20+/-0.15+/-0.01, Ach(B->etarho+)=0.02+/-0.18+/-0.02, and Ach(B->eta'pi+)=0.14+/-0.16+/-0.01.

7 pages, 1 postscript figure, submitted to Phys. Rev. Lett

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• Searches for B0 Decays to Combinations of Charmless Isoscalar Mesons

Cited by in corpus (17)

• The Physics of the B Factories
• Flavor SU(3) analysis of charmless B meson decays to two pseudoscalar mesons
• Branching Ratio and CP Asymmetry of $B\to \rho {\eta }^{(\prime )}$ Decays in the Perturbative QCD Approach
• $B\to {\eta }^{(\prime )}({\ell }^{-}{\bar{\nu }}_{\ell },{\ell }^{+}{\ell }^{-},K,K^{\ast })$ decays in the quark-flavor mixing scheme
• Evidence for B-> eta' pi and improved measurements for B-> eta' K
• Constraints on the anomalous tensor operators from B\toϕK^{\ast}, ηK^{\ast}$ and ηK decays
• Branching fraction and CP-violation charge asymmetry measurements for B-meson decays to eta K+-, etapi+-, eta'K, eta'pi+-, omega K, and omegapi+-
• Determination of gamma from Charmless B --> M1 M2 Decays Using U-Spin
• Observation of B->etarho+ and search for B0 Decays to eta'eta, etapi0, eta'pi0, and omegapi0
• Searches for B0 decays to eta K0, eta eta, eta' eta', eta phi, and eta' phi
• Search for B decays into eta' rho, eta' K*, eta' phi, eta' omega and eta' eta(') at Belle
• Measurement of charmless $B$ Decays to $\eta K^{\ast }$ and $\eta \rho$
• Measurement of Branching Fractions in Radiative B Decays to eta K gamma and Search for B Decays to eta' K gamma
• Improved Measurements of Branching Fractions and CP Asymmetries in B-> eta h Decays
• Search for the decay of a B0 or B0bar meson to K*0bar K0 or K*0 K0bar
• Pseudoscalar and Scalar Operators of Higgs-Penguins in the MSSM and B to phi K^*, K eta(') Decays
• Sum rules for B-->pi eta('), K eta('), eta(') eta(') decays