Phys. Rev. Lett. 62, 2233 - 2236 (1989)

B00 mixing at the Υ(4S)

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M. Artuso et al.
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Received 16 February 1989

We have measured B00 mixing by observing like-sign dilepton events in Υ(4S) decay. Assuming that the semileptonic branching fractions of the charged and neutral B mesons are equal and that the Υ(4S) decays to B+B- 55% of the time and to B00 45% of the time, we measure the mixing parameter r to be 0.19±0.06±0.06, where the first error is statistical and the second is systematic.


©1989 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.62.2233
DOI: 10.1103/PhysRevLett.62.2233
PACS: 13.20.Jf, 14.40.Jz

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