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International Conference on High-Energy Physics : ICHEP '96. 28, Warsaw : Pologne (1996)
Inclusive Measurement of the Charmless Semileptonic Branching Ratio of B-hadrons
P. Henrard1, P. Rosnet1
ALEPH Collaboration(s)

From the study of the kinematics properties of the final state produced in the semileptonic $\mathrm{B}$ decays $\mathrm{B\to \ell\nu_{\ell} X}$, the inclusive charmless semileptonic branching ratio of $\mathrm{B}$-hadrons has been measured. Using the data collected between 1992 and 1995, one gets: $\mathrm{BR(B\to \ell\nu_{\ell} X_u)} = (1.6\pm 0.4_{stat}\pm 0.4_{syst})\times 10^{-3}$, where $\mathrm{X_u}$ represents any charmless hadronic states.
1 :  LPC - Laboratoire de Physique Corpusculaire [Clermont-Ferrand]
Physique/Physique des Hautes Energies - Expérience
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