Measurement of Branching Fractions and Charge Asymmetries in B Meson Decays to η

We present preliminary measurements of branching fractions and charge asymmetries for the B meson decays B → η(′)K∗, B → η(′)ρ, and B+ → η′π+. The data were recorded with the BABAR detector at PEP-II and correspond to 89 × 106 BB pairs produced in e+e− annihilation through the Υ (4S) resonance. We find the branching fractions B(B0 → ηK∗0) = (19.0 −2.1 ± 1.3) × 10−6, B(B+ → ηK∗+) = (25.7 −3.6±1.8 )×10−6, B(B+ → ηρ+) = (10.5 −2.8±1.3)×10, B(B+ → η′ρ+) = (14.0 −4.6 ± 1.9)× 10−6 (< 22× 10−6 with 90% confidence), and B(B+ → η′π+) = (2.8 −1.0 ± 0.3)× 10−6 (< 4.5×10−6). We also set 90% CL upper limits of B(B0 → η′K∗0) < 6.4×10−6 and B(B+ → η′K∗+) < 12×10−6. The time-integrated charge asymmetries are Ach(ηK) = +0.03±0.11±0.02, Ach(ηK) = +0.15 ± 0.14± 0.02, and Ach(ηρ) = +0.06± 0.29 ± 0.02. Contributed to the XXIst International Symposium on Lepton and Photon Interactions at High Energies, 8/11 — 8/16/2003, Fermilab, Illinois USA Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309 Work supported in part by Department of Energy contract DE-AC03-76SF00515. The BABAR Collaboration, B. Aubert, R. Barate, D. Boutigny, J.-M. Gaillard, A. Hicheur, Y. Karyotakis, J. P. Lees, P. Robbe, V. Tisserand, A. Zghiche Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France A. Palano, A. Pompili Università di Bari, Dipartimento di Fisica and INFN, I-70126 Bari, Italy J. C. Chen, N. D. Qi, G. Rong, P. Wang, Y. S. Zhu Institute of High Energy Physics, Beijing 100039, China G. Eigen, I. Ofte, B. Stugu University of Bergen, Inst. of Physics, N-5007 Bergen, Norway G. S. Abrams, A. W. Borgland, A. B. Breon, D. N. Brown, J. Button-Shafer, R. N. Cahn, E. Charles, C. T. Day, M. S. Gill, A. V. Gritsan, Y. Groysman, R. G. Jacobsen, R. W. Kadel, J. Kadyk, L. T. Kerth, Yu. G. Kolomensky, J. F. Kral, G. Kukartsev, C. LeClerc, M. E. Levi, G. Lynch, L. M. Mir, P. J. Oddone, T. J. Orimoto, M. Pripstein, N. A. Roe, A. Romosan, M. T. Ronan, V. G. Shelkov, A. V. Telnov, W. A. Wenzel Lawrence Berkeley National Laboratory and University of California, Berkeley, CA 94720, USA K. Ford, T. J. Harrison, C. M. Hawkes, D. J. Knowles, S. E. Morgan, R. C. Penny, A. T. Watson, N. K. Watson University of Birmingham, Birmingham, B15 2TT, United Kingdom T. Held, K. Goetzen, H. Koch, B. Lewandowski, M. Pelizaeus, K. Peters, H. Schmuecker, M. Steinke Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany N. R. Barlow, J. T. Boyd, N. Chevalier, W. N. Cottingham, M. P. Kelly, T. E. Latham, C. Mackay, F. F. Wilson University of Bristol, Bristol BS8 1TL, United Kingdom K. Abe, T. Cuhadar-Donszelmann, C. Hearty, T. S. Mattison, J. A. McKenna, D. Thiessen University of British Columbia, Vancouver, BC, Canada V6T 1Z1 P. Kyberd, A. K. McKemey Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom V. E. Blinov, A. D. Bukin, V. B. Golubev, V. N. Ivanchenko, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu. I. Skovpen, E. P. Solodov, A. N. Yushkov Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia D. Best, M. Bruinsma, M. Chao, D. Kirkby, A. J. Lankford, M. Mandelkern, R. K. Mommsen, W. Roethel, D. P. Stoker University of California at Irvine, Irvine, CA 92697, USA C. Buchanan, B. L. Hartfiel University of California at Los Angeles, Los Angeles, CA 90024, USA