Eur. Phys. J. C (2004) 33: 213-232
https://doi.org/10.1140/epjc/s2004-01598-6Measurement of |V
cb
| using the semileptonic decay
https://doi.org/10.1140/epjc/s2004-01598-6
experimental physics
Measurement of |V
cb
| using the semileptonic decay 
Data from Z decays in DELPHI have been searched for 
with the 
decaying to 
and 
, 
or 
. These events are used to measure the CKM matrix element 
and the form factor slope, 
: 
corresponding to a branching fraction: 
Combining these and previous DELPHI measurements gives: 
and 
Using 
, yields: 
The b-quark semileptonic branching fraction into a emitted from higher mass charmed excited states has also been measured to be: 
© Springer-Verlag, 2004
