Measurement of B0→D(*)+sD*- branching fractions and B0→D*+sD*- polarization with a partial reconstruction technique
Abstract
We present a study of the decays B0→D(*)+sD*-, using 20.8 fb-1 of e+e- annihilation data recorded with the BABAR detector. The analysis is conducted with a partial reconstruction technique, in which only the D(*)+s and the soft pion from the D*- decay are reconstructed. We measure the branching fractions B(B0→D+sD*-)=(1.03±0.14±0.13±0.26)% and B(B0→D*+sD*-)=(1.97±0.15±0.30±0.49)%, where the first error is statistical, the second is systematic, and the third is the error due to the D+s→φπ+ branching fraction uncertainty. From the B0→D*+sD*- angular distributions, we measure the fraction of longitudinal polarization ΓL/Γ=(51.9±5.0±2.8)%, which is consistent with theoretical predictions based on factorization.
- Publication:
-
Physical Review D
- Pub Date:
- May 2003
- DOI:
- 10.1103/PhysRevD.67.092003
- arXiv:
- arXiv:hep-ex/0302015
- Bibcode:
- 2003PhRvD..67i2003A
- Keywords:
-
- 13.25.Hw;
- 13.25.-k;
- 14.40.Nd;
- Decays of bottom mesons;
- Hadronic decays of mesons;
- Bottom mesons;
- High Energy Physics - Experiment
- E-Print:
- 9 pages, 4 postscript figues, submitted to Physical Review D (Rapid Communications)