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Measurement of |$V_{cb}$| from exclusive semileptonic B decays
Exclusive semileptonic decays of B mesons allow for a nearly model independent determination of the Cabibbo-Kobayashi- Maskawa matrix element V_cb. New and updated measurements from the LEP experiments and from CLEO are presented. The combination of these results with earlier measurements from ARGUS...
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Lenguaje: | eng |
Publicado: |
1996
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/311046 |
Sumario: | Exclusive semileptonic decays of B mesons allow for a nearly model independent determination of the Cabibbo-Kobayashi- Maskawa matrix element V_cb. New and updated measurements from the LEP experiments and from CLEO are presented. The combination of these results with earlier measurements from ARGUS and CLEO gives a value of V_cb = (39.6 \pm 1.8 (exp) \pm 1.3 (theo))\times 10^-3 from the decay B->D* l nu. The first measurements of the decay B->D+ l nu by the ALEPH and CLEO collaboration confirm the predictions from HQET. |
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