Model-independent determinations of B̄ → Dlv̄, D*lv̄ form factors

C. Glenn Boyd, Benjamín Grinstein, Richard F. Lebed

Research output: Contribution to journalArticlepeer-review

145 Scopus citations


We present non-perturbative, model-independent parametrizations of the individual QCD form factors relevant to B̄ → D*lv̄ and B̄ → Dlv̄ decays. These results follow from dispersion relations and analyticity, without recourse to heavy quark symmetry. To describe a form factor with two percent accuracy, three parameters are necessary, one of which is its normalization at zero recoil, ℱ(1). We combine the individual form factors using heavy quark symmetry to extract values for the product |Vcb|ℱ(1) from B̄ → D*lv̄ data with negligible extrapolation uncertainty.

Original languageEnglish (US)
Pages (from-to)493-511
Number of pages19
JournalNuclear Physics B
Issue number3
StatePublished - Feb 26 1996
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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