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B -> D l nu form factors and the determination of |Vcb|

S. Hashimoto, A. X. El-Khadra, A. S. Kronfeld, P. B. Mackenzie, S. M. Ryan, J. N. Simone

hep-latarXiv:hep-lat/9810056

Abstract

The zero recoil limit of the B -> D l nu form factors is calculated on the lattice, which provides a model-independent determination of |Vcb|. Considering a ratio of form factors, in which the bulk of statistical and systematic errors cancel, we obtain a precise result both for h+(1) and for h-(1).

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