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@ARTICLE{Guo:127622,
      author       = {Guo, Feng-Kun and Meißner, Ulf-G.},
      title        = {{L}ight {Q}uark {M}ass {D}ependence in {H}eavy {Q}uarkonium
                      {P}hysics},
      journal      = {Physical review letters},
      volume       = {109},
      number       = {6},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2012-00580},
      pages        = {-062001},
      year         = {2012},
      note         = {5 pages, 5 figures. Version to appear in Phys. Rev. Lett},
      abstract     = {The issue of chiral extrapolations in heavy quarkonium
                      systems is discussed. We show that the light quark mass
                      dependence of the properties of heavy quarkonia is not
                      always suppressed. For quarkonia close to an open flavor
                      threshold, even a nonanalytic chiral extrapolation is
                      needed. Both these nontrivial facts are demonstrated to
                      appear in the decay widths of the hindered M1 transitions
                      between the first radially excited and ground state P-wave
                      charmonia. The results at a pion mass of about 500 MeV could
                      deviate from the value at the physical pion mass by a factor
                      of two. Our findings show the necessity of performing chiral
                      extrapolations for lattice simulations of heavy quarkonium
                      systems.},
      keywords     = {quarkonium: heavy (INSPIRE) / quark: mass dependence
                      (INSPIRE) / pi: mass (INSPIRE) / decay: width (INSPIRE) /
                      chiral (INSPIRE)},
      cin          = {IAS-4 / IKP-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IAS-4-20090406 / I:(DE-Juel1)IKP-3-20111104},
      pnm          = {531 - Hadron Structure and Dynamics (HSD) (POF2-531)},
      pid          = {G:(DE-HGF)POF2-531},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000307381900001},
      eprint       = {1203.1116},
      howpublished = {arXiv:1203.1116},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1203.1116;\%\%$},
      doi          = {10.1103/PhysRevLett.109.062001},
      url          = {https://juser.fz-juelich.de/record/127622},
}