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@ARTICLE{Stokes:890127,
author = {Stokes, Finn and Kamleh, Waseem and Leinweber, Derek B.},
title = {{E}lastic form factors of nucleon excitations in lattice
{QCD}},
journal = {Physical review / D},
volume = {102},
number = {1},
issn = {2470-0010},
address = {Melville, NY},
publisher = {Inst.812068},
reportid = {FZJ-2021-00716},
pages = {014507},
year = {2020},
abstract = {First principles calculations of the form factors of baryon
excitations are now becoming accessible through advances in
lattice-QCD techniques. In this paper, we explore the
utility of the parity-expanded variational analysis (PEVA)
technique in calculating the Sachs electromagnetic form
factors for excitations of the proton and neutron. We study
the two lowest-lying odd-parity excitations and demonstrate
that at heavier quark masses, these states are dominated by
behavior consistent with constituent quark models for the
N∗(1535) and N∗(1650), respectively. We also study the
lowest-lying localized even-parity excitation and find that
its form factors are consistent with a radial excitation of
the ground-state nucleon. A comparison of the results from
the PEVA technique with those from a conventional
variational analysis exposes the necessity of the PEVA
approach in baryon excited-state studies.},
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},
UT = {WOS:000548448400002},
doi = {10.1103/PhysRevD.102.014507},
url = {https://juser.fz-juelich.de/record/890127},
}