Published November 1, 2008 | Version v1
Journal article

Time-dependent and time-integrated angular analysis of B→φKS0π0 and φK±π±

  • 1. Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
  • 2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
  • 3. Dipartmento di Fisica, Universita di Bari, I-70126 Bari (Italy)
  • 4. INFN Sezione di Bari, I-70126 Bari (Italy)
  • 5. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
  • 6. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

Description

We perform a time-dependent and time-integrated angular analysis of the decays B0→φK*(892)0, φK2*(1430)0, and φ(Kπ)0*0 with the final sample of about 465x106 BB pairs recorded with the BABAR detector. Twenty-four parameters are investigated, including the branching fractions, CP-violation parameters, and parameters sensitive to final-state interactions. We use the dependence on the Kπ invariant mass of the interference between the scalar and vector or tensor components to resolve discrete ambiguities of the strong and weak phases. We use the time evolution of the B→φKS0π0 channel to extract the CP-violation phase difference Δφ00=0.28±0.42±0.04 between the B and B decay amplitudes. When the B→φK±π± channel is included, the fractions of longitudinal polarization fL of the vector-vector and vector-tensor decay modes are measured to be 0.494±0.034±0.013 and 0.901-0.058+0.046±0.037, respectively. This polarization pattern requires the presence of a positive-helicity amplitude in the vector-vector decay from a currently unknown source.

Additional details

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
78
Journal Issue
9
Journal Page Range
p. 092008-092008.27
ISSN
0556-2821
CODEN
PRVDAQ

Optional Information

Notes
(c) 2008 The American Physical Society
Collaborations
BABAR Collaboration