Electromagnetic properties of heavy-light mesons

2025/08/28 by Ángel S. Miramontes, Miramontes, A. S., Joannis Papavassiliou +3 · 2 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2508.20631

openalex publication_date 2025/08/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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.

Citations

• A comprehensive approach to the physics of mesons
• Imaging the charge distributions of flavor-symmetric and -asymmetric mesons
• Timelike form factor for the anomalous process γ^∗ π→ ππ
• Heavy-light mesons from a flavour-dependent interaction
• Radially excited pion: electromagnetic form factor and the box contribution to the muon's g-2
• Pion and kaon electromagnetic and gravitational form factors
• Science Requirements and Detector Concepts for the Electron-Ion Collider: EIC Yellow Report
• Baryons as relativistic three-quark bound states

Cited by

• Pion physics with dressed quark-gluon vertices
• Electromagnetic form factors and structure of the T_bb tetraquark from lattice QCD

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