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hep-ph2026
Pion gravitational form factors in an algebraic rainbow-ladder model
Jiayin Kang, Lei Chang
Within rainbow-ladder truncation, we identify three contributions to the pion's gravitational form factors---graviton coupling to the quark, to the gluon dressing the quark, and to…
hep-ph2026
Radiative charmonium decays in a contact-interaction model with dynamical quark anomalous magnetic moment
Yehan Xu, Zanbin Xing, Khépani Raya +1
The BESIII Collaboration has recently reported two measurements of the two-photon decay width of the meson. The 2024 result is significantly larger than most theoretical and…
hep-ph2026
A Direct Algebraic Pathway to Hadronic Observables in the Contact Model
Jiayin Kang, Zanbin Xing, Lei Chang
We present a novel algebraic framework for computing hadron properties directly within the contact interaction model. Utilizing Fierz transformations, the method recasts the Bethe-…