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Beauty semi-leptonic branching ratios

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Il Nuovo Cimento A (1971-1996)

Summary

Recent measurements of inclusive and exclusive semi-leptonic b branching ratios are reviewed. Model-independent analyses from ARGUS and CLEO confirm the value BR(b→ℓνX)=10.4%, while new analyses from ALEPH obtain higher values above 11%. The difference is not consistent with measured values of b hadron lifetime. New measurements of BR(B→D*ℓν) from CLEO and ALEPH are in good agreement. First measurements of B→D*πℓν branching ratios from OPAL, DELPHI, and ALEPH confirm indirect evidence for a large D** component in semi-leptonic B decays.

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Authors and Affiliations

  1. University of Wisconsin, USA

    M. Schmitt

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  1. M. Schmitt
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Correspondence to M. Schmitt.

Additional information

This paper was supported by the US Department of Energy, grant number DE-FG0295ER40896.

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Schmitt, M. Beauty semi-leptonic branching ratios. Nuov Cim A 109, 851–861 (1996). https://doi.org/10.1007/BF02731718

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  • DOI: https://doi.org/10.1007/BF02731718

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