Non-relativistic Model for the Semileptonic \Lambda_b \to \Lambda_c   Decay
  We calculate the decay width for $\Lambda_b \to \Lambda_c e {\bar \nu}$ in the frame work of a nonrelativistic quark (NRQ) model of heavy baryons where the light quarks play the role of spectators. Our calculation does not make an explicit use of the heavy quark symmetry. The branching ratio for the above process as calculated here agrees reasonably well with the experimental value. 
Debrupa Chakraverty, Triptesh De, Binayak Dutta-Roy and K. S. Gupta   (Saha Institute of Nuclear Physics, Calcutta, India)