Semileptonic transition of Λb baryon

The semileptonic transition of Lambda(b) baryon is studied using the Hypercentral constituent quark model. The sixdimensional hyperradial Schrodinger equation is solved in the variational approach to get masses and wavefunctions of heavy baryons. The matrix elements of weak decay are written in terms of the overlap integrals of the baryon wave function. The Isgur-Wise function is determined to calculate exclusive semileptonic decay Lambda(b) -> Lambda(c) l (v) over bar. The calculated decay rate and the branching ratio of Lambda(b) baryon are consistent with other theoretical predictions and with the available experimental observations.