Measurement of the B^0 meson properties using partially reconstructed B^0 to D^{*-}pi^+ and B^0 to D^{*-}l^+nu decays with the BABAR detector
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2000-08-23 | |
| dc.date.accessioned | 2026-07-07T03:34:05Z | |
| dc.date.available | 2026-07-07T03:34:05Z | |
| dc.description | The two B^0 decay processes B^0 --> D^{*-}pi^+ and B^0 --> D^{*-}l^+nu have been studied by means of a partial reconstruction technique using a data sample collected with the BABAR detector at the PEP-II storage ring. To increase statistics, only the soft pi^- from the decay D^{*-} --> pi^-D^0 was used in association with either an oppositely-charged high-momentum pion or lepton. Events were then identified by exploiting the constraints from the simple kinematics of Y(4S) decays. A clear signature is obtained in each case. The position of the B^0 decay point was obtained from the reconstructed pi^+(l^+)pi^- vertex. The position of the other anti-B^0 in the event was also determined. Taking advantage of the boost given to the Y(4S) system by the asymmetric beam energies of PEP-II, the lifetime of the B^0 meson has been measured from the separation distance between the two vertices along the beam direction. The preliminary results are tau_B0 = 1.55+/-0.05+/-0.07 ps, tau_B0 = 1.62+/-0.02+/-0.09 ps, respectively for the B^0 --> D^{*-}pi^+ and B^0 --> D^{*-}l^+nu channels. | |
| dc.description | 20 pages, 13 postscript figures, contributed paper to ICHEP2000 | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0008053 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0008053 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/36835 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the B^0 meson properties using partially reconstructed B^0 to D^{*-}pi^+ and B^0 to D^{*-}l^+nu decays with the BABAR detector | |
| dc.type | text |