Precision study of the SU(3) topological susceptibility in the continuum
  We determine the topological susceptibility in the SU(3) pure gauge theory. We perform a series of high-statistics lattice studies and take the combined continuum and infinite volume limit. We find chi_{top}r_0^4=0.0524(7)(6) which translates into chi_{top}^{1/4}=193(1)(8)MeV with the second error exclusively due to the intrinsic scale ambiguity. 
Stephan Durr, Zoltan Fodor, Christian Hoelbling, Thorsten Kurth