From the 1 of 8 linked papers with an AI index.
8 papers
Low-energy scattering of the and system
Jiang Yan, Xiong-Hui Cao, Meng-Lin Du +1
The paper studies low‑energy interactions between the charmonium state J/ψ and light pseudoscalar mesons (π and K) using dispersion‑relation techniques, extracting scattering lengt…
Dispersive analysis of the $J/Ï\toÏ^0 γ^\ast$ transition form factor with - mixing effects
Xiong-Hui Cao, Feng-Kun Guo, Christoph Hanhart +1
Motivated by the discrepancies noted recently between the theoretical predictions of the electromagnetic $J/Ï\to Ï^0 γ^*$ transition form factor and the BESIII data, we reanalyz…
Renormalization of chiral perturbation theory with spinless matter field in curved spacetime
Cheng-Cheng Li, Xiong-Hui Cao, Feng-Kun Guo
We generalize chiral perturbation theory with spinless matter fields in the fundamental representation of to curved spacetime in the presence of an external gravitati…
Gravitational form factors of pions, kaons and nucleons from dispersion relations
Xiong-Hui Cao, Feng-Kun Guo, Qu-Zhi Li +2
The gravitational form factors of pions, kaons and the nucleons are investigated by employing modern dispersive techniques and chiral perturbation theory. We determine the gravitat…
Revisiting Roy-Steiner-equation analysis of pion-kaon scattering from lattice QCD data
Xiong-Hui Cao, Feng-Kun Guo, Zhi-Hui Guo +1
A comprehensive analysis of and amplitudes at large unphysical pion mass for all important partial waves is presented. A set of cross…
Rigorous Roy-Steiner equation analysis of scattering at unphysical quark masses
Xiong-Hui Cao, Feng-Kun Guo, Zhi-Hui Guo +1
We perform a rigorous analysis of the scattering at an unphysical pion mass 391 MeV using the Roy-Steiner equations, which satisfy unitarity, analyticity and crossing symmetr…