Measurement of the B0->pilnu Form Factor Shape and Branching Fraction, and Determination of |Vub| with a Loose Neutrino Reconstruction Technique
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2006-07-25 | |
| dc.date.accessioned | 2026-07-07T07:16:35Z | |
| dc.date.available | 2026-07-07T07:16:35Z | |
| dc.description | We report the results of a study of the exclusive charmless semileptonic B0->pilnu decay undertaken with approximately 227 million BBbar pairs collected at the Upsilon(4S) resonance with the BABAR detector. The analysis uses events in which the signal B mesons are reconstructed with a novel loose neutrino reconstruction technique. We obtain partial branching fractions in 12 bins of q2, the l+nu invariant mass squared, from which we extract the f+(q2) form factor shape and the total branching fraction: BF(B0->pilnu) = (1.44 +- 0.08(stat) +- 0.10(syst))x 10-4. Based on a recent theoretical calculation of the form factor, we find the magnitude of the CKM matrix element |Vub| to be (4.1 +- 0.2(stat) +- 0.2(syst) +0.6-0.4(FF))x 10-3, where the last uncertainty is due to the normalization of the form factor. | |
| dc.description | 25 pages, 9 postscript figures, submitted to ICHEP2006 | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0607060 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0607060 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/113636 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the B0->pilnu Form Factor Shape and Branching Fraction, and Determination of |Vub| with a Loose Neutrino Reconstruction Technique | |
| dc.type | text |