B meson decays to quasi-two-body charmless final states at BABAR

摘要

We present results for measurements of the decays to charmless final states of B-0 meson to eta K-0, W, a(1)(+)(1260)pi(-) with a(1)(+)(1260) ->pi(+)pi(+)pi(-), and of B+ to eta rho(+), eta'pi(+). Analyses are based on data taken with the BABAR detector at the PEP-II asymmetric e(+)e(-) collider at SLAC. We measure the following branching fractions in units of 10(-6): B(B-0 -> eta K-0) = 2.5 +/- 0.8 +/- 0.1, B(B-0 ->eta omega) 1.2 +/- 0.6 +/- 0.2 (< 2.1, 90% C.L.), B(B-0 -> a(1)(+) (1260)pi(-)) = 42.6 +/- 4.2 +/- 4.1, B(B+ -> eta rho(+)) 8.6 +/- 2.2 +/- 1.1, and B(B+ -> eta'pi(+)) = 4.2 +/- 1.0 +/- 0.5. The charge asymmetries are A(ch)(B(B+ -> eta rho(+))) (7 +/- 19 +/- 2)% and A(ch)(B(B+ -> eta'pi(+))) = (24 +/- 19 +/- 1)%. First error is statistical, the second systematic. All results are preliminary.