Résumé
Using the ARGUS detector at the e+e- storage ring DORIS II at DESY, we have made two measurements of the mixing parameter χd using kaons as flavour tags. Using D*+ K± correlations we found χd = 0.20 ± 0.13 ± 0.12 and from the study of (D*+ℓ-) K± correlations we obtained χd = 0.19 ± 0.07 ± 0.09. The branching ratio for B̄ → D*+ X has been updated: Br(B̄ → D*+ X) = (19.6 ± 1.9)%. We have also determined the average multiplicity of charged kaons in B0 decays to be 0.78 ± 0.08.
| langue originale | Anglais |
|---|---|
| Pages (de - à) | 256-264 |
| Nombre de pages | 9 |
| journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 374 |
| Numéro de publication | 1-3 |
| Les DOIs | |
| état | Publié - 2 mai 1996 |
| Modification externe | Oui |
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