Measurement of Vcb from the decay process

2001 
A new precise measurement of |Vcb| and of the branching ratio BR) has been performed using a sample of about 5000 semileptonic decays , selected by the DELPHI detector at LEP I by tagging the soft pion from D∗+→D0π+. The results are: , . The analytic dependencies of the differential cross-section and of the Isgur–Wise form factor as functions of the variable have also been obtained by unfolding the experimental resolution.
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