…, R Wang, MS Alam, IJ Kim, B Nemati, JJ O'Neill… - Physical review …, 1993 - APS
We have measured the B 0 B 0 mixing probability, χ d, using a sample of 965 000 BB pairs
from Υ (4S) decays. Counting dilepton events, we find χ d= 0.157±0.016±0. 018− 0.021+ …