Abstract
We have measured B0B0 mixing by observing like-sign dilepton events in (4S) decay. Assuming that the semileptonic branching fractions of the charged and neutral B mesons are equal and that the (4S) decays to B+B- 55% of the time and to B0B0 45% of the time, we measure the mixing parameter r to be 0.190.060.06, where the first error is statistical and the second is systematic.
| Original language | English |
|---|---|
| Pages (from-to) | 2233-2236 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 62 |
| Issue number | 19 |
| DOIs | |
| State | Published - 1989 |
| Externally published | Yes |
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