Résumé
Using a sample of 88.8×106 BB̄ events collected with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center, we measure the branching fractions of seven color-suppressed B-meson decays: β(B̄0→D0π0) = [2.9±0.2(stat)±0.3(syst)]× 10-4, β(B̄0→D*0π0) = [2.9±0.4(stat)±0.5(syst)] × 10-4, β(B̄0→D0η) = [2.5±0.2(stat) ±0.3(syst)]×10-4, β(B̄0→D *0η = [2.6±0.4(stat)δ0.4(syst)] ×10 -4, β(B̄0→D0ω) = [3.0±0.3(stat)±0.4(syst)]× 10-4, β(B̄0→D*0ω) = [4.2±0.7(stat)±0.9(syst)] ×10-4, and β(B̄→D0η′) = [ 1.7±0.4(stat) ±0.2(syst)]× 10-4. We set the 90% confidence-level upper limit: β(B̄0→D*0η′)<2. 6×10-4. The channels B̄→D*0η, D*0ω, and D0η′ are seen with more than five-sigma statistical significance. All of these branching fractions are significantly larger than theoretical expectations based on the "naive" factorization model.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 032004 |
| journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 69 |
| Numéro de publication | 3 |
| Les DOIs | |
| état | Publié - 1 janv. 2004 |
| Modification externe | Oui |
Empreinte digitale
Examiner les sujets de recherche de « Measurement of branching fractions of color-suppressed decays of the B̄-0 meson to D(*)0π0 D(*)0η D(*)0ω, and D 0η′ ». Ensemble, ils forment une empreinte digitale unique.Contient cette citation
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver