Measurement of |Vcb| using B0 to D*l nu decays
| dc.creator | The OPAL collaboration | |
| dc.creator | Abbiendi, G. | |
| dc.date | 2000-03-10 | |
| dc.date.accessioned | 2026-07-07T12:01:29Z | |
| dc.date.available | 2026-07-07T12:01:29Z | |
| dc.description | The magnitude of the Cabibbo-Kobayashi-Maskawa matrix element Vcb has been measured using B0 to D*l nu decays recorded on the Z0 peak using the OPAL detector at LEP. The D* to D0 pi+ decays were reconstructed both in the particular decay modes D0 to K- pi+ and D0 to K- pi+ pi- and via an inclusive technique. The product of |Vcb| and the decay form factor of the B0 to D* l nu transition at zero recoil F(1) was measured to be F(1)|Vcb| = (37.1+-1.0+-2.0)x10^-3, where the uncertainties are statistical and systematic respectively. By using Heavy Quark Effective Theory calculations for F(1), a value of |Vcb| = (40.7+-1.1+-2.2+-1.6)x 10^-3 was obtained, where the third error is due to theoretical uncertainties in the value of F(1). The branching ratio Br(B0 to D* l nu) was also measured to be (5.26+-0.20+-0.46)%. | |
| dc.description | 19 pages, 4 figures, Submitted to Phys. Letts. B | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0003013 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0003013 | |
| dc.identifier | Phys.Lett.B482:15-30,2000 | |
| dc.identifier | doi:10.1016/S0370-2693(00)00457-3 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207110 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of |Vcb| using B0 to D*l nu decays | |
| dc.type | text |