From a study of the kinematic properties of the final state produced in the semileptonic decays , the inclusive charmless semileptonic branching ratio of b hadrons is measured. With a sample of 3.6 million hadronic Z decays recorded between 1992 and 1995 with the ALEPH detector at LEP, the value is determined to be , where represents any charmless hadronic state and b is a mixture of b hadrons weighted by their production rates. This measurement yields the result where the last error comes from the conversion of the branching ratio to the CKM matrix element squared.
Determination of |Vub| from the measurement of the inclusive charmless semileptonic branching ratio of b hadrons / R. Barate et al.; E. Focardi; V. Ciulli. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - ELETTRONICO. - 6:(1999), pp. 555-574. [10.1007/s100529801031]
Determination of |Vub| from the measurement of the inclusive charmless semileptonic branching ratio of b hadrons
FOCARDI, ETTORE;CIULLI, VITALIANO
1999
Abstract
From a study of the kinematic properties of the final state produced in the semileptonic decays , the inclusive charmless semileptonic branching ratio of b hadrons is measured. With a sample of 3.6 million hadronic Z decays recorded between 1992 and 1995 with the ALEPH detector at LEP, the value is determined to be , where represents any charmless hadronic state and b is a mixture of b hadrons weighted by their production rates. This measurement yields the result where the last error comes from the conversion of the branching ratio to the CKM matrix element squared.
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