Hadronic B Decays to Charmless Final States and to J/psi K*
- SLAC
Preliminary results from the BABAR experiment on charmless B decays to charged pions or kaons, and the measurement of the B {yields} J/{psi} K* decay amplitudes are presented. The data sample, collected at the asymmetric-energy B-factory PEP-II at SLAC, comprises a total number of 22.7 million {Upsilon}(4S) decays, corresponding to an integrated on-resonance luminosity of approximately 21 fb{sup -1}. We measure the following CP-averaged branching fractions: {Beta}(B{sup 0} {yields} {pi}{sup +}{pi}{sup -}) = (4.1 {+-} 1.0(stat) {+-} 0.7(sys)) x 10{sup -6}, {Beta}(B{sup 0} {yields} K{sup +} {pi}{sup -}) = (16.7 {+-} 1.6(stat){sub -1.7}{sup +1.2}(sys)) x 10{sup -6}, and an upper limit of {Beta}(B{sup 0} {yields} K{sup +}K{sup -}) < 2.5 x 10{sup -6}, at 90% confidence limit. The measurement of the J/{psi}K* decay amplitudes results in R{perpendicular} = 0.160 {+-} 0.032(stat) {+-} 0.036(sys), and reveals a dominant longitudinal component. The phase of the longitudinal amplitude shows evidence for non-vanishing final-state interaction.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515;
- OSTI ID:
- 784900
- Report Number(s):
- SLAC-PUB-8802
- Country of Publication:
- United States
- Language:
- English
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