An improved measurement of B O- overlineBO mixing in Z O decays
Abstract
A more precise determination of the B 0- overlineB0 mixing parameter in Z 0 decays based on a fourfold increase in statistics has been made using the 1990 and 1991 L3 data. The analysis of the dilepton events, muons and electrons, gives: χB = 0.121 ± 0.017 (stat) ± 0.006 (sys). Using the value of χ d measured at the γ(4S) we derive the following limit for χs: χs > 0.16 (90% CL).
- Publication:
-
Physics Letters B
- Pub Date:
- August 1992
- DOI:
- 10.1016/0370-2693(92)91119-T
- Bibcode:
- 1992PhLB..288..395A