A measurement of CP-violation parameters in B0B0bar mixing using partially reconstructed D*- l+ nu_l events at BaBar
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2006-07-28 | |
| dc.date.accessioned | 2026-07-07T07:16:37Z | |
| dc.date.available | 2026-07-07T07:16:37Z | |
| dc.description | CP violation in B0B0bar mixing is characterized by the value of the parameter |q/p| being different from 1, and the Standard Model predicts this difference to be smaller than 10^{-3}. We present a measurement of this parameter using a partial reconstruction of one of the B mesons in the semileptonic channel D*- l+ nu_l, where only the hard lepton and the soft pion from the D*- --> D0bar pi- decay are reconstructed. The flavor of the other B is determined by means of lepton tagging. The determination of |q/p| is then performed with a fit to the proper time difference of the two B decays. We use a luminosity of 200.8 fb^-1, collected at the Y(4S) resonance by the BaBar detector at the PEP-II asymmetrical-energy e+e- collider, in the period 1999-2004. We obtain the preliminary result: |q/p| - 1 = (6.5 +/- 3.4(stat.) +/- 2.0(syst.)) x 10^{-3} | |
| dc.description | Submitted to ICHEP2006 | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0607091 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0607091 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/113655 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | A measurement of CP-violation parameters in B0B0bar mixing using partially reconstructed D*- l+ nu_l events at BaBar | |
| dc.type | text |