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-…
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…
Empirical Determination of the Kaon Distribution Amplitude
Lei Chang, Yu-Bin Liu, Khépani Raya +1
We propose a data-driven approach to extract the Kaon leading-twist distribution amplitude (DA) from empirical information on the ratio of the neutral-to-charged kaon electromagnet…
Bottomonium meson spectrum with quenched and unquenched quark models
M. Atif Sultan, Wei Hao, E. S. Swanson +1
An open question in hadronic phenomenology concerns the ``unquenching" effects of higher Fock space components on the leading Fock space description of hadrons. We address this by…