Baryonic sources using irreducible representations of the double-covered   octahedral group
  Irreducible representations (IRs) of the double-covered octahedral group are used to construct lattice source and sink operators for three-quark baryons. The goal is to achieve a good coupling to higher spin states as well as ground states. Complete sets of local and nonlocal straight-link operators are explicitly shown for isospin 1/2 and 3/2 baryons. The orthogonality relations of the IR operators are confirmed in a quenched lattice simulation. 
LHP Collaboration: S. Basak, R. Edwards, R. Fiebig, G. T. Fleming, U.   M. Heller, C. Morningstar, D. Richards, I. Sato, S. ...