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Lattice-Constrained Parametrizations of Form Factors for Semileptonic and Rare Radiative B Decays

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Original languageEnglish
Number of pages392
JournalPhysics Letters B
Issue number3-4
Publication statusPublished - 13 Aug 1997


We describe the form factors for B to rho lepton neutrino and B to K* gamma decays with just two parameters and the two form factors for B to pi lepton neutrino with a further two or three parameters. The parametrizations are consistent with heavy quark symmetry, kinematic constraints and lattice results, which we use to determine the parameters. In addition, we test versions of the parametrizations consistent (or not) with light-cone sum rule scaling relations at q^2=0.

    Research areas

  • hep-lat, Semileptonic and rare radiative decays of B mesons, Determination of Cabibbo-Kobayashi-Maskawa matrix elements, Lattice QCD calculation, Heavy quark effective theory

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