Semileptonic decays B→ρlν and D→ρlν and the heavy-quark symmetry

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Abstract

We determine the first correction in inverse powers of heavy-quark masses to the ratio of the differential decay rates of B→ρeν and D→ρeν at the kinematical point of zero hadronic recoil (maximum q2) within the quark model. In this particular case of heavy-to-light meson transitions, the heavy-quark limit gives a definite prediction, and theoretical uncertainties should be minimal. This result is potentially important for the extraction of the Kobayashi-Maskawa element Vub from future measurements.

Original languageEnglish
Pages (from-to)3938-3944
Number of pages7
JournalPhysical Review D
Volume47
Issue number9
DOIs
StatePublished - 1993
Externally publishedYes

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