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@ARTICLE{Rodekamp:1025448,
author = {Rodekamp, Marcel and Engelhardt, Michael and Green, Jeremy
R. and Krieg, Stefan and Liuti, Simonetta and Meinel, Stefan
and Negele, John W. and Pochinsky, Andrew and Syritsyn,
Sergey},
title = {{M}oments of nucleon unpolarized, polarized, and
transversity parton distribution functions from lattice
{QCD} at the physical point},
journal = {Physical review / D},
volume = {109},
number = {7},
issn = {2470-0010},
address = {Ridge, NY},
publisher = {American Physical Society},
reportid = {FZJ-2024-02900},
pages = {074508},
year = {2024},
abstract = {The second Mellin moments ⟨x⟩ of the nucleon’s
unpolarized, polarized, and transversity parton distribution
functions are computed. Two lattice QCD ensembles at the
physical pion mass are used: these were generated using a
tree-level Symanzik-improved gauge action and 2+1 flavor
tree-level improved Wilson Clover fermions coupling via
2-level HEX-smearing. The moments are extracted from forward
matrix elements of local leading twist operators. We
determine renomalization factors in RI-(S)MOM and match to
$\overline{MS}$ at scale 2 GeV. Our findings show that
operators that exhibit vanishing kinematics at zero momentum
can have significantly reduced excited-state contamination.
The resulting polarized moment is used to quantify the
longitudinal contribution to the quark spin-orbit
correlation. All our results agree within two sigma with
previous lattice results.},
cin = {JSC / CASA},
ddc = {530},
cid = {I:(DE-Juel1)JSC-20090406 / I:(DE-Juel1)CASA-20230315},
pnm = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
(SDLs) and Research Groups (POF4-511) / NRW-FAIR
(NW21-024-A)},
pid = {G:(DE-HGF)POF4-5111 / G:(NRW)NW21-024-A},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001224338600002},
doi = {10.1103/PhysRevD.109.074508},
url = {https://juser.fz-juelich.de/record/1025448},
}