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@ARTICLE{Spitz:860319,
      author       = {Spitz, A. and Hoeber, H. and Eicker, N. and Güsken, S. and
                      Lippert, Th. and Schilling, K. and Struckmann, T. and
                      Ueberholz, P. and Viehoff, J.},
      title        = {α {S} from Υ spectroscopy with dynamical {W}ilson
                      fermions},
      journal      = {Physical review / D},
      volume       = {60},
      number       = {7},
      issn         = {0556-2821},
      address      = {Melville, NY},
      publisher    = {Inst.812068},
      reportid     = {FZJ-2019-01094},
      pages        = {074502},
      year         = {1999},
      abstract     = {We estimate the QCD coupling constant from a lattice
                      calculation of the bottomonium spectrum. The second order
                      perturbative expansion of the plaquette expectation value is
                      employed to determine αS at a scale set by the 2S−1S and
                      1P−1S level splittings. The latter are computed in NRQCD
                      in a dynamical gauge field background with two degenerate
                      flavors of Wilson quarks at intermediate masses and
                      extrapolated to the chiral limit. Combining the Nf=2 result
                      with the quenched result at equal lattice spacing we
                      extrapolate to the physical number of light flavors to find
                      a value of α(5)¯MS(mZ)=0.1118(17). The error quoted covers
                      both statistical and systematic uncertainties in the scale
                      determination. An additional $5\%$ uncertainty comes from
                      the choice of the underlying sea quark formulation and from
                      truncation errors in perturbative expansions.},
      ddc          = {530},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1103/PhysRevD.60.074502},
      url          = {https://juser.fz-juelich.de/record/860319},
}