% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Eicker:860314,
      author       = {Eicker, N. and Lippert, Th. and Schilling, K. and Spitz, A.
                      and Fingberg, J. and Güsken, S. and Hoeber, H. and Viehoff,
                      J.},
      title        = {{I}mproved Υ spectrum with dynamical {W}ilson fermions},
      journal      = {Physical review / D},
      volume       = {57},
      number       = {7},
      issn         = {0556-2821},
      address      = {Melville, NY},
      publisher    = {Inst.812068},
      reportid     = {FZJ-2019-01089},
      pages        = {4080-4090},
      year         = {1998},
      abstract     = {We present results for the b¯b spectrum obtained using an
                      O(Mbv6)-correct nonrelativistic lattice QCD action, where Mb
                      denotes the bare b-quark mass and v2 is the mean-squared
                      quark velocity. Propagators are evaluated on SESAM’s three
                      sets of dynamical gauge configurations generated with two
                      flavors of Wilson fermions at β=5.6. These results,
                      obtained with dynamical Wilson fermions, are compared to a
                      quenched analysis at equivalent lattice spacing β=6.0.
                      Using our three sea-quark values, we perform the
                      “chiral” extrapolation to meff=ms/3, where ms denotes
                      the strange quark mass. The light quark mass dependence is
                      found to be small in relation to the statistical errors.
                      Comparing the full QCD result to our quenched simulation, we
                      find better agreement of our dynamical data with
                      experimental results in the spin-independent sector, but
                      observe no unquenching effects in hyperfine splittings. To
                      pin down the systematic errors we have also compared
                      quenched results in different “tadpole” schemes as well
                      as using a lower-order action. We find that spin splittings
                      with an O(Mbv4) action are $O(10\%)$ higher compared to
                      O(Mbv6) results. Relative to the results obtained with the
                      plaquette method, the Landau gauge mean-link tadpole scheme
                      raises the spin splittings by about the same margin so that
                      our two improvements are opposite in effect.},
      ddc          = {530},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1103/PhysRevD.57.4080},
      url          = {https://juser.fz-juelich.de/record/860314},
}