Dosch, H. G.Ferreira, E.Nielsen, M.Rosenfeld, R. [UNESP]2014-05-272014-05-271998-07-09Physics Letters B. Amsterdam: Elsevier B.V., v. 431, n. 1-2, p. 173-178, 1998.0370-2693http://hdl.handle.net/11449/130443We set up sum rules for heavy lambda decays in a full QCD calculation which in the heavy quark mass limit incorporates the symmetries of heavy quark effective theory. For the semileptonic Λc decay we obtain a reasonable agreement with experiment. For the Λb semileptonic decay we find at the zero recoil point a violation of the heavy quark symmetry of about 20%. © 1998 Published by Elsevier Science B.V. All rights reserved.engArtigo10.1016/S0370-2693(98)00566-8WOS:000075163000025Acesso restrito2-s2.0-0347718062