B meson decays to charmless meson pairs containing eta or eta' mesons

We present updated measurements of the branching fractions for B(0) meson decays to eta K(0), eta eta, eta phi, eta omega, eta(')K(0), eta(')eta('), eta(')phi, and eta(')omega, and branching fractions and CP-violating charge asymmetries for B(+) decays to eta pi(+), eta K(+), eta(')pi(+), and eta(')K(+). The data represent the full data set of 467x10(6) BB pairs collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at the SLAC National Accelerator Laboratory. Besides large signals for the four charged B decay modes and for B(0)->eta(')K(0), we find evidence for three B(0) decay modes at greater than 3.0 sigma significance. We find B(B(0)->eta K(0))=(1.15(-0.38)(+0.43)+/- 0.09)x10(-6), B(B(0)->eta omega)=(0.94(-0.30)(+0.35)+/- 0.09)x10(-6), and B(B(0)->eta(')omega)=(1.01(-0.38)(+0.46)+/- 0.09)x10(-6), where the first (second) uncertainty is statistical (systematic). For the B(+)->eta K(+) decay mode, we measure the charge asymmetry A(ch)(B(+)->eta K(+))=-0.36 +/- 0.11 +/- 0.03.