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@ARTICLE{Collins:18921,
      author       = {Collins, S. and Göckeler, M. and Hägler, Ph. and Horsley,
                      R. and Nakamura, Y. and Nobile, A. and Pleiter, D. and
                      Rakow, P.E.L. and Schäfer, A. and Schierholz, G. and
                      Schroers, W. and Stüben, H. and Winter, F. and Zanotti,
                      J.M.},
      title        = {{D}irac and {P}auli form factors from lattice {QCD}},
      journal      = {Physical review / D},
      volume       = {84},
      number       = {7},
      issn         = {1550-7998},
      address      = {[S.l.]},
      publisher    = {Soc.},
      reportid     = {PreJuSER-18921},
      pages        = {074507},
      year         = {2011},
      note         = {The numerical calculations have been performed on the
                      APEmille, apeNEXT systems and PAX cluster at NIC/DESY
                      (Zeuthen), the IBM BlueGene/L at EPCC (Edinburgh), the IBM
                      BlueGene/P at NIC/JSC (Julich), the QPACE systems of the SFB
                      TR-55, the SGI Altix and ICE systems at LRZ (Munich) and
                      HLRN (Berlin/Hannover). This work was supported in part by
                      the DFG (SFB TR-55) and by the European Union (grants
                      238353, ITN STRONGnet and 227431, HadronPhysics2, and
                      256594). S. C. acknowledges support from the
                      Claussen-Simon-Foundation (Stifterband fur die Deutsche
                      Wissenschaft). P. H. acknowledges support by the
                      Heisenberg-programme of the DFG and would like to thank the
                      DESY Theory Group for hospitality while this work was being
                      completed. W. S. wishes to thank J.-W. Chen at National
                      Taiwan University and H.-Y. Cheng and H.-N. Li at Academia
                      Sinica for their hospitality and for valuable physics
                      discussions and suggestions. J. Z. is supported by the STFC
                      under Grant No. ST/F009658/1.},
      abstract     = {We present a comprehensive analysis of the electromagnetic
                      form factors of the nucleon from a lattice simulation with
                      two flavors of dynamical O(a)-improved Wilson fermions. A
                      key feature of our calculation is that we make use of an
                      extensive ensemble of lattice gauge field configurations
                      with four different lattice spacings, multiple volumes, and
                      pion masses down to m(pi) similar to 180 MeV. We find that
                      by employing Kelly-inspired parametrizations for the Q(2)
                      dependence of the form factors, we are able to obtain stable
                      fits over our complete ensemble. Dirac and Pauli radii and
                      the anomalous magnetic moments of the nucleon are extracted
                      and results at light quark masses provide evidence for
                      chiral nonanalytic behavior in these fundamental
                      observables.},
      keywords     = {J (WoSType)},
      cin          = {JSC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {Scientific Computing (FUEK411) / 411 - Computational
                      Science and Mathematical Methods (POF2-411) / STRONGNET -
                      Strong Interaction Supercomputing Training Network (238353)
                      / HADRONPHYSICS2 - Study of Strongly Interacting Matter
                      (227431)},
      pid          = {G:(DE-Juel1)FUEK411 / G:(DE-HGF)POF2-411 /
                      G:(EU-Grant)238353 / G:(EU-Grant)227431},
      shelfmark    = {Astronomy $\&$ Astrophysics / Physics, Particles $\&$
                      Fields},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000296885300005},
      doi          = {10.1103/PhysRevD.84.074507},
      url          = {https://juser.fz-juelich.de/record/18921},
}