Search for rare quark-annihilation decays, B--> D-s((*)-)phi

Journal article

We report on searches for B-→Ds- and B-→Ds*-. In the context of the standard model, these decays are expected to be highly suppressed since they proceed through annihilation of the b and ū quarks in the B- meson. Our results are based on 234×106 Υ(4S)→BB̄ decays collected with the BABAR detector at SLAC. We find no evidence for these decays, and we set Bayesian 90% confidence level upper limits on the branching fractions B(B-→Ds-)<1.9×10-6 and B(B-→Ds*-)<1. 2×10-5. These results are consistent with standard model expectations. © 2006 The American Physical Society.

Authors: Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y

• Publication status: Published
• Journal: Physical Review D
• Volume: 73
• Issue: 1
• Publication date: 2006-01-01
• DOI: 10.1103/PhysRevD.73.011103
• EISSN: 1550-2368
• ISSN: 1550-7998
• Language: English