We address an actual problem of baryon-resonance dominated meson-exchange processes in the low GeV regime, i.e. the phase and the structure of meson-NN* transition vertices. Our starting point is a quark-diquark model for the baryons (obeying approximate covariance; the mesons are kept as ...
The color structure for the currents J_{1} and J_{3} are symmetric \left[ \mathbf {6}_{\mathbf {c}}\right] _{b c} \otimes \left[ \overline{\mathbf {6}}_{\mathbf {c}}\right] _{\bar{q} \bar{s}}, while for the J_{2} and J_{4} are antisymmetric \left[ \overline...
We investigate the meson spectroscopy and the decays of vector mesons in a quark-confining two-step potential model proposed earlier for the quark-antiquark system. The predictions for the low-lying spectra of ρ, ϕ, K and K* systems are, in general, found to be in good agreement with...
We formulate the quark meson coupling model as a many-body effective Hamiltonian. This leads naturally to the appearance of many-body forces. We investigate the zero range limit of the model and compare its Hartree-Fock Hamiltonian to that corresponding to the Skyrme effective force. By fixing ...
Based on the QCD string picture at confining phase, we conjecture that the deconfinement transition always accompanies a condensation of higher meson resonances with a power-law behavior, “meson turbulence”. We employ the AdS/CFT correspondence to calculate the meson turbulence for N=2 supersymmetri...
optdepends structure The general structure for optdepends is { "optdepends": { "OPTION1": [ condition1, condition2, condition3, ... ], "OPTION2": [ condition4, condition5, condition6, ... ] } } where each condition is of the form { "value": value_to_match, "depends": { dep...
The quark-meson coupling (QMC) model for nuclear matter, which describes nuclear matter as non-overlapping MIT bags bound by the self-consistent exchange of scalar and vector mesons is modified by the introduction of a density dependent bag constant. The density dependence of the bag constant is...
The ultrarelativistic quarks are a... PG Blunden,GA Miller - 《Physical Review C Nuclear Physics》 被引量: 147发表: 1996年 Neutron star properties in the quark-meson coupling model The effects of internal quark structure of baryons on the composition and structure of neutron star matter with...
The current standard model of physics is a result of the ongoing attempts to understand the structure of matter and its fundamental interaction. According to present knowledge, the elemental building blocks of matter consist of spin 1/2 fermions which interact with each other via the exchange of ...
effective vector exchange/ A1375 Hadron-induced low- and intermediate-energy reactions and scattering, energy les 10 GeV A1385 Hadron-induced high- and super-high-energy interactions, energy > 10 GeV A1235H Phenomenological composite models of particle structure and reactions (partons, bags, etc....