17 Isken, Tobias Guo, Xiao-Yu Heo, Yonggoo Korpa, Csaba L. Lutz, Matthias QCD FHF Physical review / D Physical review / D American Physical Society Ridge, NY 2470-0010 10.1103/PhysRevD.109.034032 English 034032 3 109 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. 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. ; PUB:(DE-HGF)16, ; 0, ; WOS:001183211100009 Journal Article 2024 GSI-2024-01147 2024 https://repository.gsi.de/record/354668 https://doi.org/10.1103/PhysRevD.109.034032 <Go to ISI>://WOS:001183211100009