Measurement of B0d - B0d-bar mixing rate from the time evolution of dilepton events at the Upsilon(4S)
| dc.creator | Abe, K. | |
| dc.date | 2000-11-28 | |
| dc.date | 2001-03-14 | |
| dc.date.accessioned | 2026-07-07T12:01:34Z | |
| dc.date.available | 2026-07-07T12:01:34Z | |
| dc.description | We report a determination of the B0d - B0d-bar mixing parameter Delta-m_d based on the time evolution of dilepton yields in Upsilon(4S) decays. The measurement is based on a 5.9 /fb data sample collected by the Belle detector at KEKB. The proper-time difference distributions for same-sign and opposite-sign dilepton events are simultaneously fitted to an expression containing Delta-m_d as a free parameter. Using both muons and electrons, we obtain Delta-m_d = 0.463 +- 0.008(stat.) +- 0.016(sys.) ps^{-1} This is the first determination of Delta-m_d from time evolution measurements at the Upsilon(4S). We also place limits on possible CPT violations. | |
| dc.description | 12 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0011090 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0011090 | |
| dc.identifier | Phys.Rev.Lett.86:3228-3232,2001 | |
| dc.identifier | doi:10.1103/PhysRevLett.86.3228 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207138 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of B0d - B0d-bar mixing rate from the time evolution of dilepton events at the Upsilon(4S) | |
| dc.type | text |