Measurements of Branching Fractions, Polarizations, and Direct CP-Violation Asymmetries in B{yields}{rho}K* and B{yields}f{sub 0}(980)K* Decays
- Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
- Universitat de Barcelona, Facultat de Fisica Dept. ECM, E-08028 Barcelona (Spain)
- Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
- Institute of High Energy Physics, Beijing 100039 (China)
- University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
We report searches for B-meson decays to the charmless final states {rho}K* and f{sub 0}(980)K* with a sample of 232x10{sup 6} BB pairs collected with the BABAR detector at the PEP-II e{sup +}e{sup -} collider. We measure in units of 10{sup -6} the following branching fractions, where the first error quoted is statistical and the second systematic, or upper limits are given at the 90% confidence level : B(B{sup +}{yields}{rho}{sup 0}K*{sup +})<6.1, B(B{sup +}{yields}{rho}{sup +}K*{sup 0})=9.6{+-}1.7{+-}1.5, B(B{sup 0}{yields}{rho}{sup -}K*{sup +})<12.0, B(B{sup 0}{yields}{rho}{sup 0}K*{sup 0})=5.6{+-}0.9{+-}1.3, B(B{sup +}{yields}f{sub 0}(980)K*{sup +})=5.2{+-}1.2{+-}0.5, and B(B{sup 0}{yields}f{sub 0}(980)K*{sup 0})<4.3. For the significant modes, we also measure the fraction of longitudinal polarization and the charge asymmetry: f{sub L}(B{sup +}{yields}{rho}{sup +}K*{sup 0})=0.52{+-}0.10{+-}0.04, f{sub L}(B{sup 0}{yields}{rho}{sup 0}K*{sup 0})=0.57{+-}0.09{+-}0.08, A{sub CP}(B{sup +}{yields}{rho}{sup +}K*{sup 0})=-0.01{+-}0.16{+-}0.02, A{sub CP}(B{sup 0}{yields}{rho}{sup 0}K*{sup 0})=0.09{+-}0.19{+-}0.02, and A{sub CP}(B{sup +}{yields}f{sub 0}(980)K*{sup +})=-0.34{+-}0.21{+-}0.03.
- OSTI ID:
- 20861139
- Journal Information:
- Physical Review Letters, Vol. 97, Issue 20; Other Information: DOI: 10.1103/PhysRevLett.97.201801; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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