Bottom hadron spectroscopy from lattice QCD

Stefan Meinel
College of William & Mary

Lattice studies of hadrons containing b quarks are important for several 
reasons. In addition to the calculation of matrix elements needed for 
flavor physics, lattice QCD can predict masses of b hadrons and solve 
puzzles in spectroscopy such as those concerning the recently discovered 
Omega_b and eta_b. Including b quarks in lattice QCD calculations requires 
special techniques because the lattice spacing presently cannot be chosen 
fine enough to resolve their Compton wavelength. In this talk I will give 
an introduction to lattice methods for heavy quarks, focusing on 
nonrelativistic QCD. I will then present recent results for the 
spectroscopy of heavy hadrons, including precise calculations of the 
bottomonium spectrum and the mass of the triply-bottom baryon Omega_bbb.