Journal Article

GSI-2024-01147

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Triangle and box diagrams in coupled-channel systems from the chiral Lagrangian

Isken, T. (Corresponding author)GSI* ; Guo, X.-Y. ; Heo, Y. ; Korpa, C. L. ; Lutz, M.GSI*

2024
American Physical Society Ridge, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevD.109.034032  doi:10.15120/GSI-2024-01147

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.

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.

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Contributing Institute(s):

1. Hadronenphysik & QCD (QCD)
2. Helmholtz ForschAkad Hess. f. FAIR, HFHF (FHF)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. Hadron physics (HFHF project) (I:(DE-Ds200)HFHF-Hadron) (I:(DE-Ds200)HFHF-Hadron)
3. SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU Darmstadt (SUC-GSI-DA) (SUC-GSI-DA)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2024

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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