Measurement of the Oscillation Frequency for B0-Bobar Mixing using Hadronic B0 Decays

Details Measurement of the Oscillation Frequency for B0-Bobar Mixing using Hadronic B0 Decays Measurement of the Oscillation Frequency for B0-Bobar Mixing using Hadronic B0 Decays

2002-07-05

arxiv.org/abs/hep-ex/0207022v2

Phys.Lett.B542:207-215,2002

Physics

High Energy Physics

High Energy Physics - Experiment

15 pages, 3 figures, submitted to Phys. Lett. B

Scientific paper

10.1016/S0370-2693(02)02350-X

The oscillation frequency of B0-B0bar mixing (Delta-m_d) has been measured using 29.1 fb^{-1} of datacollected with the Belle detector at KEKB. This measurement is made through the distributions of the proper decay time difference of B pairs in events tagged as same- and opposite-flavor decays. In each event, one $B$ is fully reconstructed in a flavor-specific hadronic decay mode, while the flavor of the other is extracted through a likelihood calculated from the b-flavor information carried in its final decay products. We obtain Delta-m_d = (0.528 +- 0.017 +- 0.011) ps^{-1}, where the first error is statistical and the second error is systematic.

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