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@ARTICLE{Isken:354668,
author = {Isken, Tobias and Guo, Xiao-Yu and Heo, Yonggoo and Korpa,
Csaba L. and Lutz, Matthias},
title = {{T}riangle and box diagrams in coupled-channel systems from
the chiral {L}agrangian},
journal = {Physical review / D},
volume = {109},
number = {3},
issn = {2470-0010},
address = {Ridge, NY},
publisher = {American Physical Society},
reportid = {GSI-2024-01147},
pages = {034032},
year = {2024},
note = {Published by the American Physical Society under the terms
of the Creative Commons Attribution 4.0 International
license. Further distribution of this work must maintain
attribution to the author(s) and the published article’s
title, journal citation, and DOI. Funded by SCOAP3.},
abstract = {We perform an analysis of triangle- and box-loop
contributions to the generalized potential in the scattering
of Goldstone bosons off the 𝐽𝑃 =0− and 1− charmed
mesons. Particular emphasis is put on the use of on-shell
mass parameters in such contributions in terms of a
renormalization scheme that ensures the absence of
power-counting violating terms. This is achieved with a
systematically extended set of Passarino-Veltman basis
functions that leads to manifest power-counting conserving
one-loop expressions and avoids the occurrence of
superficial kinematical singularities. Compact expressions
to chiral order three and four are presented that are
particularly useful in coding such coupled-channel systems.
Our formal results are generic and prepare analogous
computations for other systems, like meson-baryon scattering
from the chiral Lagrangian.},
cin = {QCD / FHF},
ddc = {530},
cid = {I:(DE-Ds200)QCD-20160901OR395 /
I:(DE-Ds200)FHF-20200605OR451},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612) / Hadron
physics (HFHF project) (I:(DE-Ds200)HFHF-Hadron) /
SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU
Darmstadt (SUC-GSI-DA)},
pid = {G:(DE-HGF)POF4-612 / I:(DE-Ds200)HFHF-Hadron /
G:(DE-Ds200)SUC-GSI-DA},
experiment = {$EXP:(DE-Ds200)no_experiment-20200803$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001183211100009},
doi = {10.1103/PhysRevD.109.034032},
url = {https://repository.gsi.de/record/354668},
}