Author/Authors :
Themis and Hawkings، نويسنده , , Richard، نويسنده ,
Abstract :
The measurements of the magnitudes of the CKM matrix elements Vcb and Vub from LEP are reviewed. |Vcb| is measured using the decay B̄0→D∗+l−ν̄, whilst |Vub| is measured using inclusive charmless semileptonic b decays. Particular attention is paid to the limiting systematic errors in each case.