Study of two-body hadronic decays of A < inf > b < /inf > baryon in the heavy quark effective theory

Abstract

We investigate the two-body nonleptonic weak decays of Λb baryon into a Λc baryon and a pseudoscalar or vector meson in the framework of HQET. With the additional assumption of factorization the branching ratios and asymmetry parameters for various decay processes Λb → Λc+P-(V-) are obtained. Treating the s quark as heavy we have also applied HQET to study the decay process Λb → ΛJ/ψ and the estimated branching ratio for this process is lying within the present experimental limits.