An Estimate of alpha_S from Bottomonium in Unquenched QCD
  We estimate the strong coupling constant from the perturbative expansion of the plaquette. The scale is set by the 2S-1S and 1P-1S splittings in bottomonium which are computed in NRQCD on dynamical gauge configurations with nf=2 degenerate Wilson quarks at intermediate masses. We have increased the statistics of our spectrum calculation in order to reliably extrapolate in the sea-quark mass. We find a value of alpha_MS(m_Z) = 0.1118(26) which is somewhat lower than previous estimates within NRQCD. 
SESAM Collaboration: A.Spitz, N.Eicker, S.Guesken, H.Hoeber, P.Lacock,   T.Lippert, K.Schilling, T.Struckmann, P.Ueberholz, ...