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@ARTICLE{Green:834139,
author = {Green, Jeremy and Hasan, Nesreen and Meinel, Stefan and
Engelhardt, Michael and Krieg, Stefan and Laeuchli, Jesse
and Negele, John and Orginos, Kostas and Pochinsky, Andrew
and Syritsyn, Sergey},
title = {{U}p, down, and strange nucleon axial form factors from
lattice {QCD}},
journal = {Physical review / D},
volume = {95},
number = {11},
issn = {2470-0010},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2017-04137},
pages = {114502},
year = {2017},
abstract = {We report a calculation of the nucleon axial form factors
$G_A^q(Q^2)$ and $G_P^q(Q^2)$ for all three light quark
flavors $q\in\{u,d,s\}$ in the range $0\leq Q^2\lesssim
1.2\text{ GeV}^2$ using lattice QCD. This work was done
using a single ensemble with pion mass 317 MeV and made use
of the hierarchical probing technique to efficiently
evaluate the required disconnected loops. We perform
nonperturbative renormalization of the axial current,
including a nonperturbative treatment of the mixing between
light and strange currents due to the singlet-nonsinglet
difference caused by the axial anomaly. The form factor
shapes are fit using the model-independent $z$ expansion.
From $G_A^q(Q^2)$, we determine the quark contributions to
the nucleon spin and axial radii. By extrapolating the
isovector $G_P^{u-d}(Q^2)$, we obtain the induced
pseudoscalar coupling relevant for ordinary muon capture and
the pion-nucleon coupling constant. We find that the
disconnected contributions to $G_P$ form factors are large,
and give an interpretation based on the dominant influence
of the pseudoscalar poles in these form factors.},
cin = {JSC},
ddc = {530},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {511 - Computational Science and Mathematical Methods
(POF3-511)},
pid = {G:(DE-HGF)POF3-511},
typ = {PUB:(DE-HGF)16},
eprint = {1703.06703},
howpublished = {arXiv:1703.06703},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:1703.06703;\%\%$},
UT = {WOS:000403232800003},
doi = {10.1103/PhysRevD.95.114502},
url = {https://juser.fz-juelich.de/record/834139},
}