5 papers
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…
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-…
The Dichotomous Nature of the Meson and the Nucleon D-Term
Zanbin Xing, Khépani Raya, Yu-xin Liu +1
Employing a symmetry-preserving contact-interaction formulation of the Dyson-Schwinger equations in quantum chromodynamics (QCD), we examine the identity of the meson and its…
Electromagnetic structure of axial-vector mesons and implications for the muon
Zanbin Xing, Lei Chang, Khépani Raya
The electromagnetic structure of axial-vector mesons is investigated via elastic and two-photon transition form factors (TFFs). To this end, we employ a framework based on the Dyso…
Sketching pion and proton mass distributions
Xiaobin Wang, Zanbin Xing, Lei Chang +3
A light-front holographic model is used to illustrate an algebraic scheme for constructing a representation of a hadron's zero-skewness generalised parton distribution (GPD) from i…