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@ARTICLE{Bulava:598859,
author = {Bulava, John and Hanlon, Andrew D. and Hörz, Ben and
Morningstar, Colin and Nicholson, Amy and Romero-López,
Fernando and Skinner, Sarah and Vranas, Pavlos and
Walker-Loud, André},
title = {{E}lastic nucleon-pion scattering at $m_π$ = 200 {M}e{V}
from lattice {QCD}},
journal = {Nuclear physics / B},
volume = {987},
issn = {0550-3213},
address = {Amsterdam},
publisher = {North-Holland Publ. Co.},
reportid = {PUBDB-2023-07053, arXiv:2208.03867. MIT-CTP/5455.
DESY-22-140},
pages = {116105},
year = {2023},
note = {ISSN 0550-3213 not unique: **2 hits**.33 pages, 16 figures;
version accepted for publication},
abstract = {Elastic nucleon-pion scattering amplitudes are computed
using lattice QCD on a single ensemble of gauge field
configurations with $N_f = 2+1$ dynamical quark flavors and
$m_π$ = 200 MeV. The s-wave scattering lengths with both
total isospins I=1/2 and I=3/2 are inferred from the
finite-volume spectrum below the inelastic threshold
together with the I=3/2p-wave containing the $Δ$(1232)
resonance. The amplitudes are well-described by the
effective range expansion with parameters constrained by
fits to the finite-volume energy levels, enabling a
determination of the I=3/2 scattering length with
statistical errors below 5\%, while the I=1/2 scattering
length is somewhat less precisely evaluated. Systematic
errors due to excited states and the influence of higher
partial waves are controlled, providing a step toward future
computations down to physical light quark masses with
multiple lattice spacings and volumes.},
keywords = {error: statistical (INSPIRE) / expansion: effective range
(INSPIRE) / quark: mass (INSPIRE) / quark: flavor (INSPIRE)
/ lattice field theory (INSPIRE) / scattering length
(INSPIRE) / finite size (INSPIRE) / partial wave (INSPIRE) /
Delta(1232) (INSPIRE) / excited state (INSPIRE) / scattering
amplitude (INSPIRE) / energy levels (INSPIRE) / gauge field
theory (INSPIRE) / lattice (INSPIRE) / isospin (INSPIRE) /
scattering (INSPIRE) / lattice QCD (autogen) / scattering
amplitudes (autogen)},
cin = {$Z_APR$},
ddc = {530},
cid = {$I:(DE-H253)Z_APR-20201126$},
pnm = {611 - Fundamental Particles and Forces (POF4-611)},
pid = {G:(DE-HGF)POF4-611},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
eprint = {2208.03867},
howpublished = {arXiv:2208.03867},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2208.03867;\%\%$},
UT = {WOS:000975210800001},
doi = {10.1016/j.nuclphysb.2023.116105},
url = {https://bib-pubdb1.desy.de/record/598859},
}