In a previous paper, it was pointed out that the wave functions of all particles are not pure waves, besides the main partial waves, they all contain other partial waves. It is very interesting to know what role these different partial waves play in particle transitions. Therefore, by using the Bethe-Salpeter equation method, we study the radiative electromagnetic decays...
Exclusive photoproduction of heavy vector mesons from the proton is widely assumed to proceed via mechanisms that are sensitive to glue physics in the target proton. It was once thought that vector meson dominance could be used to relate this photoproduction process to the in-proton expectation value of the trace anomaly in quantum chromodynamics (QCD); hence, to deliver insights into the...
Exploiting crossing symmetry, the pion valence quark distribution function (DF) is used to predict the pion fragmentation function (FF). In this way, a unified treatment of the pion DFs and FFs was accomplished. The significance of this work lies in that it is the first prediction of FFs in any approach with a traceable connection to quantum chromodynamics (QCD), and it also gives insights...
The BESIII Collaboration recently observed a new charmonium-like vector state Y(3872) in e^+e^-\rightarrow D\bar{D}^, which should be the first P-wave D\bar{D}^ molecular resonance. The experimental and theoretical identification of the P-wave dimeson state holds paramount importance in enhancing our comprehension of the non-perturbative QCD and few-body physics. Its existence is firmly...
In this talk, I will present our recent study on the low lying axial-vector meson spectrum, which is an extention of our study on eta1(1855).
We propose an unquenched quark model for describing the heavy-light mesons by taking into account the coupled-channel effects induced by chiral dynamics. After including a relativistic correction term for the strong transition amplitudes, both the mass spectra and decay widths of the observed heavy-light mesons can be successfully described simultaneously in a unified framework, several...
