Exploring the flavor content of light and heavy-light pseudoscalars
R. M. Moita (Instituto Tecnol\'ogico de Aeron\'autica, DCTA, S\~ao, Jos\'e dos Campos, Brazil), J. P. B. C. de Melo (Laborat\'orio de F\'isica, Te\'orica e Computacional - LFTC - UCS/UNICID S\~ao Paulo, Brazil), K.
TL;DR
This paper investigates the electroweak properties of light and heavy-light pseudoscalar mesons using a covariant quark model, analyzing flavor content, symmetry breaking, and Higgs contributions.
Contribution
It introduces a unified covariant quark model with symmetric vertices to describe both light and charmed pseudoscalar mesons, including flavor decomposition and symmetry breaking effects.
Findings
Successful description of light pseudoscalar meson properties
Analysis of SU(3) and SU(4) symmetry breaking effects
Comparison highlighting Higgs contributions to meson structure
Abstract
The electroweak properties of light and charmed D and Ds pseudoscalar mesons are investigated within a unified covariant constituent quark model. The quark-antiquark-meson vertices are assumed to have a symmetric form by the exchange of quark momenta, which is successful in describing the light pseudoscalar meson properties. The flavor decomposition of the elastic electromagnetic form factors, electromagnetic charge radii, and weak decay constants are calculated. Based on the results a discussion on the SU(3) and SU(4) symmetry breaking is made and a comparison with the pion and kaon properties to highlight the Higgs contribution to the structure of these mesons.
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