The unquenched Upsilon spectrum
  We describe the bottomonium spectrum obtained on the UKQCD dynamical ensembles and its comparison to quenched results. We include a determination of alpha_s and m_b from the dynmaical results. 
UKQCD collaboration: L. Marcantonio, P. Boyle, C. T. H. Davies, J.   Hein and J. Shigemitsu