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@ARTICLE{Alexandrou:483177,
author = {Alexandrou, C. and Bacchio, S. and Constantinou, M. and
Dimopoulos, P. and Finkenrath, J. and Frezzotti, R. and
Hadjiyiannakou, K. and Jansen, K. and Kostrzewa, B. and
Koutsou, G. and Spanoudes, G. and Urbach, C.},
title = {{F}irst moments of the nucleon transverse quark spin
densities using lattice {QCD}},
reportid = {PUBDB-2022-05150, arXiv:2202.09871},
year = {2022},
abstract = {We present a calculation of the Mellin moments of the
transverse quark spin densities in the nucleon using lattice
QCD. The densities are extracted from the unpolarized and
transversity generalized form factors extrapolated to the
continuum limit using three $N_f=2+1+1$ twisted mass fermion
gauge ensembles simulated with physical quark masses and
spanning three lattice spacings. The first moment of
transversely polarized quarks in an unpolarized nucleon
shows an interesting distortion, which can be traced back to
the sharp falloff of the transversity generalized form
factor $\bar{B}_{Tn0}(t)$. The isovector tensor anomalous
magnetic moment is determined to be $\kappa_T=1.051(94)$,
which confirms a negative and large Boer-Mulders function,
$h_1^{\perp}$, in the nucleon.},
keywords = {quark: spin: transverse (INSPIRE) / quark: spin: density
(INSPIRE) / spin: density (INSPIRE) / fermion: mass: twist
(INSPIRE) / quark: mass (INSPIRE) / nucleon (INSPIRE) /
lattice field theory (INSPIRE) / transversity (INSPIRE) /
form factor (INSPIRE) / magnetic moment (INSPIRE) /
isovector (INSPIRE) / lattice (INSPIRE) / moment (INSPIRE) /
continuum limit (INSPIRE)},
cin = {$Z_ZPPT$},
cid = {$I:(DE-H253)Z_ZPPT-20210408$},
pnm = {611 - Fundamental Particles and Forces (POF4-611)},
pid = {G:(DE-HGF)POF4-611},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)25},
eprint = {2202.09871},
howpublished = {arXiv:2202.09871},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2202.09871;\%\%$},
url = {https://bib-pubdb1.desy.de/record/483177},
}