This is the LEPBOSC area at CERN. Perhaps you are looking for one of the following links:
the HFLAV web site:
http://www.slac.stanford.edu/xorg/hflav/
the web page of the HFLAV sub-group on b-hadron fractions, lifetimes and oscillation parameters:
http://www.slac.stanford.edu/xorg/hflav/osc/
the archived web site of the ancient LEP working group on B oscillations:
http://lepbosc.web.cern.ch/LEPBOSC/archive_LEPBOSC
(this site also gives some links to other old LEP working groups)
Author:
OS
28-Dec-2013
Latest mod. 16-Jun-2017, OS