Abstract
In the framework of a QCD relativistic potential model we evaluate the form factors describing the exclusive decays B→ πℓ ν and B→ Kℓ +ℓ −. The present calculation extends a previous analysis of B meson decays into light vector mesons. We find results in agreement with the data, when available, and with the theoretical constraints imposed by the Callan-Treiman relation and the infinite heavy quark mass limit.
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