On semileptonicB-decays into longitudinally polarized ρ-mesons

Abstract

The heavy quark limit can not be taken directly for the decayB→ρev if the ρ meson is longitudinally polarized. We employ some recent ideas of a special realization of chiral symmetry to relate the above process to the decayB→πev in the heavy quark limit, which corresponds to the chiral limit in this so called vector realization of chiral symmetry.