A lattice study of Λb semileptonic decay

We present results from a lattice study of the semileptonic decay Lambda(b) --> Lambda(c)lv(l). We use O(a(2),alpha(s)a(2)) improved quenched lattices of the MILC collaboration, with lattice spacing similar to 0.13 fm. For the valence quarks, the tadpole-improved clover action is used, with the Fermilab method employed for the heavy quarks. Form factors are extracted from the vector as well as the axial-vector part of the current.