. The lower obtained limit is at 
.
The activity on 
is also reminded.
Recent results on B mixing and rare B decays from LEP
Achille Stocchi, University and INFN, Milano
A review on recent results ( updated for Summer 1998 ) on B mixing and rare B decays from LEP is given.
For the first part, a special emphasis is put on the experimental results on
. The lower obtained limit is at .
The activity on is also reminded.
For the second part, most important results are the new measurements of
.
Finally a review of the current status of the Cabibbo-Kobayashi-Maskawa
matrix is presented ( within the Standard Model ) with the determination
of the 
and 
parameters from the measurements of ,
, 
and from the limit on
. From these results the values of 
, 
and
the angle 
can be deduced. The value of has an accuracy
similar to the one expected after the first years of running at B factories.
The distribution of can be also obtained, showing that the
present analyses are situated in a high probability region for a positive
signal, which still may be observed at LEP.
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