Two measurements of B0B¯0 mixing
Abstract
We have measured the B0B¯0 mixing probability, χd, using a sample of 965 000 BB¯ pairs from Υ(4S) decays. Counting dilepton events, we find χd=0.157+/-0.016+/-0.018+0.028-0.021. Using tagged B0 events, we find χd=0.149+/-0.023+/-0.019+/-0.010. The first (second) error is statistical (systematic). The third error reflects a +/-15% uncertainty in the assumption, made in both cases, that charged and neutral B pairs contribute equally to dilepton events. We also obtain a limit on the CP impurity in the B0d system, ||Re(ɛ0B)||<0.045 at 90% C.L.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 1993
- DOI:
- 10.1103/PhysRevLett.71.1680
- Bibcode:
- 1993PhRvL..71.1680B
- Keywords:
-
- 14.40.Jz;
- 11.30.Er;
- 13.20.Jf;
- Charge conjugation parity time reversal and other discrete symmetries;
- Decays of other mesons