Résumé
We present a determination of the Cabibbo-Kobayashi-Maskawa matrix element based on the analysis of semileptonic B decays from a sample of 88×106 Υ(4S) decays collected with the BABAR detector at the SLAC PEP-II e+e- storage ring. Charmless semileptonic B decays are selected using measurements of the electron energy and the invariant mass squared of the electron-neutrino pair. We obtain =(3.95±0.26-0.42+0.58±0.25)×10-3, where the errors represent experimental uncertainties, heavy quark parameter uncertainties, and theoretical uncertainties, respectively.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 111801 |
| journal | Physical Review Letters |
| Volume | 95 |
| Numéro de publication | 11 |
| Les DOIs | |
| état | Publié - 9 sept. 2005 |
| Modification externe | Oui |
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