On the 1 m2 corrections to the form-factors in Λb→Λce decays

J. G. Körner, D. Pirjol

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Abstract

Model-independent bounds are presented for the form-factors describing the semileptonic decay Λb→Λce at the end-point of the lepton energy spectrum. For the axial-vector form-factor f{hook}1A(1) we obtain f{hook}1A(1)≤0.960/0.935, where the uncertainty arises from the value of μπ2, the average kinetic energy of the b quark inside the Λb baryon. A bound is given on the forward matrix element of the axial current in a Λb baryon which is relevant for the inclusive semileptonic decays of the polarized Λb decays.

Original languageEnglish
Pages (from-to)399-404
Number of pages6
JournalPhysics Letters B
Volume334
Issue number3-4
DOIs
StatePublished - 18 Aug 1994

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