Measurement of the decay B→Dℓνℓ in fully reconstructed events and determination of the Cabibbo-Kobayashi-Maskawa matrix element

Abstract

We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element jVcbj using the decay B→Dℓνℓ in fully reconstructed events. One B meson in the event is fully reconstructed in a hadronicdecay mode, while the other, on the signal side, is partially reconstructed from a charged lepton and either a D+ or D0 meson in a total of 23 hadronic decay modes.