Semileptonic weak decays of heavy baryons

We propose a simple model to describe the semileptonic weak decays among he avy baryons in the heavy quark limit in a unified way. The current matrix e lements of the heavy baryons, with spin-0 light diquark, are evaluated to g ive the omega-dependence of the form factors. The numerical values are also calculated and the branching ratio for Lambda(b) --> Lambda(c)e<(nu)over b ar>(e) is consequently obtained in the range (4.9 - 15.3)%.