Journal Article

GSI-2026-00282

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electromagnetic properties of heavy-light mesons

Miramontes, A. S. (Corresponding author) ; Papavassiliou, J. (Corresponding author) ; Pawlowski, J. M. (Corresponding author)

2025
Springer Heidelberg

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Please use a persistent id in citations: doi:10.1140/epjc/s10052-025-15121-w  doi:10.15120/GSI-2026-00282

Report No.: 2508.20631

Abstract: Within the Bethe–Salpeter framework, we present a computation of space-like electromagnetic form factors for pseudoscalar mesons, including light and heavy-light systems. Our approach employs a flavour-dependent variation of the standard Taylor effective charge, which contains key contributions from the quark-gluon vertices. This effective interaction is a common ingredient of all relevant dynamical equations, and accommodates the crucial mass differences between the various quark flavours. Particular attention is paid to the nonperturbative determination of the quark-photon vertex. The computed electromagnetic form factors for the pion and the kaon mesons show excellent agreement with experimental determinations. In addition, the predictions for the charge radii of heavy-light systems are in overall good agreement with lattice QCD.

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Contributing Institute(s):

1. ExtreMe Matter Institute, EMMI (EXM)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. SFB 1225 Z-V - Koordination des Sonderforschungsbereichs 1225 ISOQUANT (Z-V) (317302840) (317302840)
3. DFG project G:(GEPRIS)390900948 - EXC 2181: STRUKTUREN: Emergenz in Natur, Mathematik und komplexen Daten (390900948) (390900948)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2025

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Database coverage:
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