Study of Rare B-Meson Decays Related to the CPObservable sin(2beta+gamma) at the BABAR Experiment
- Univ. of California, Berkeley, CA (United States)
This study reports the observation of the decays B0→D$$*+\atop{s}$$π- and B0→D(*)-K+ in a sample of 230 x 106 Y(4S) → B$$\bar{B}$$ events collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage ring, located at the Stanford Linear Accelerator Center. The branching fractions β(B0 → D$$+\atop{S}$$π-) = (1.3 ± 0.3 (stat) ± 0.2 (syst)) x 10-5, β(B0 → D$$+\atop{S}$$K+) = (2.5 ± 0.4 (stat) ± 0.4 (syst)) x 10-5, β(B0→D$$*+\atop{s}$$π-) = (2.8 ± 0.6 (stat) ± 0.5 (syst)) x 10-5, and β(B0→D(*)-K+) = (2.0 ± 0.5 (stat) ± 0.4 (syst)) x 10-5 are measured. The significance of the measurements to differ from zero are 5, 9, 6, and 5 standard deviations, respectively. This is a first observation of the decaysB+→D$$*+\atop{s}$$π- and B0→D(*)-K+. These results may potentially be useful in determining the CP asymmetry parameter sin(2β + γ) in the decays B0→D$$*+\atop{s}$$π-.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 915388
- Report Number(s):
- SLAC-R-845; TRN: US0804976
- Country of Publication:
- United States
- Language:
- English
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