Heavy-light baryonic mass splittings from the lattice
  We present lattice estimates of the mass of the heavy-light baryons $\Lambda_b$ and $\Xi_b$ obtained using propagating heavy quarks. For $\Lambda_b$ our result is $M_{\Lambda_b}=5.728 \pm 0.144 \pm 0.018$ GeV, after extrapolation to the continuum limit and in the quenched approximation. 
C. Alexandrou, A. Borrelli, S. Guesken, F. Jegerlehner, K. Schilling,   G. Siegert and R. Sommer