| HAL : in2p3-00702451, version 1 |
| arXiv : 1205.6245 |
| DOI : 10.1103/PhysRevD.87.032004 |
| Fiche détaillée | Récupérer au format |
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| Physical Review D 87 (2013) 032004 |
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| Branching fraction measurement of B \to omega l nu decays |
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| BABAR Collaboration(s) |
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| (2013) |
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| We present a measurement of the $B \to \omega \ell \nu$ branching fraction based on a sample of 467 million BB pairs recorded by the BaBar detector at the SLAC PEP-2 e+e- collider. We observe $1041 \pm 133$ signal decays, corresponding to a branching fraction of $\BR(B \to \omega \ell \nu$) = (1.15 \pm 0.15 \pm 0.12) \times 10^{-4}$, where the first error is statistical and the second is systematic. The dependence of the decay rate on $q^2$, the momentum transfer squared to the lepton system, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules. |
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| Thème(s) | : | Physique/Physique des Hautes Energies - Expérience |
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| Lien vers le texte intégral : |
| in2p3-00702451, version 1 | |
| http://hal.in2p3.fr/in2p3-00702451 | |
| oai:hal.in2p3.fr:in2p3-00702451 | |
| Contributeur : Françoise Marechal | |
| Soumis le : Mercredi 30 Mai 2012, 11:57:49 | |
| Dernière modification le : Vendredi 15 Février 2013, 17:10:14 | |