Low-energy scattering processes of vector meson and nucleon are an important window for studying non-perturbative QCD. The interaction with nucleon, meson-nucleon length $|\alpha_{VN}|$, is component the study hadronic interactions. Nowadays many values $|\alpha_{VN}|$ have been reported using recent photoproduction experiment data or quasi data. In addition, trace anomalous energy contribution...

The mass spectra of nucleon resonances with spin 1 2 , 3 2 , and 5 2 are systematically studied in the constituent quark model with meson-quark coupling, which is inspired by the spontaneous breaking of chiral symmetry of QCD. The meson-quark coupling gives rise not only to the one-meson-exchange potential between quarks but also to the self-energy of baryon resonances due to the existence of m...

Studies of meson production in nucleon–nucleon collisions at threshold are characterised by few degrees of freedom in a configuration of well defined initial and final states with a transition governed by short range dynamics. Effects from low–energy scattering in the exit channel are inherent to the data and probe the interaction in baryon–meson and meson–meson systems otherwise difficult to a...

In this article, we take the point of view that the charmed scalar meson Ds0(2317) is the conventional cs̄ meson and devote to evaluate the strong coupling constant gDs0DK within the framework of the light-cone QCD sum rules approach. The numerical values for the large scalar-DK coupling constant gDs0DK support the hadronic dressing mechanism, just like the scalar mesons f0(980) and a0(980), the...

We calculate the mass spectrum of the scalar meson nonet in the Nambu–JonaLasinio model (NJL model) with the ’t Hooft interaction. We also include corrections connected with meson loops in our analysis. The masses of the pseudoscalar and scalar meson nonets are in a satisfactory agreement with experimental data except for the mass of the f0(980) scalar meson. In order to describe this mass more...

We study the exclusive decays of B meson into P-wave charmonium states χcJ(J = 0, 1) within QCD factorization approach and find that for B → χc1K decay, the factorization breaks down due to logarithmic divergences arising from nonfactorizable spectator interactions even at twist-2 order, and the decay rate is too small to accommodate the data, and that for B → χc0K decay, there are infrared div...

Because of their large masses, one expects charm mesons to be mostly produced in the initial preequilibrium stage of relativistic heavy ion collisions. They have thus been suggested as possible probes of the initial dynamics in these collisions. Previous studies have been concentrated on the production of charm quarks from the preequilibrium partonic matter [1]. For charm meson production from ...

Modifications of the DGMLY relation for calculation of electromagnetic π-meson mass difference based on the Chiral Symmetry Restoration phenomenon at high energies as well as the Operator Product Expansion of quark densities for vector (ρ) and axial-vector (a1) meson fields difference are proposed. In the calculations higher meson resonances in vector and axial-vector channels are taken into ac...