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@ARTICLE{Ren:902630,
author = {Ren, Xiu-Lei and Epelbaum, E. and Gegelia, J. and Meißner,
U.-G.},
title = {{T}he ${\vec{\Lambda (1405)}}$ in resummed chiral effective
field theory},
journal = {The European physical journal / C},
volume = {81},
number = {7},
issn = {1434-6044},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2021-04425},
pages = {582},
year = {2021},
abstract = {We study the unitarized meson–baryon scattering amplitude
at leading order in the strangeness S=−1 sector using
time-ordered perturbation theory for a manifestly
Lorentz-invariant formulation of chiral effective field
theory. By solving the coupled-channel integral equations
with the full off-shell dependence of the effective
potential and applying subtractive renormalization, we
analyze the renormalized scattering amplitudes and obtain
the two-pole structure of the Λ(1405) resonance. We also
point out the necessity of including higher-order terms.},
cin = {IAS-4 / IKP-3},
ddc = {530},
cid = {I:(DE-Juel1)IAS-4-20090406 / I:(DE-Juel1)IKP-3-20111104},
pnm = {5111 - Domain-Specific Simulation Data Life Cycle Labs
(SDLs) and Research Groups (POF4-511) / DFG project
196253076 - TRR 110: Symmetrien und Strukturbildung in der
Quantenchromodynamik (196253076)},
pid = {G:(DE-HGF)POF4-5111 / G:(GEPRIS)196253076},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000680861900005},
doi = {10.1140/epjc/s10052-021-09386-0},
url = {https://juser.fz-juelich.de/record/902630},
}