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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},
}