Supported by the National Natural Science Foundation of China under Grant No 90503011.
The quark-delocalization colour-screening model is employed to calculate the effective potential between nucleon and kaon. The results show that the potentials are attractive in the I = 0 channel and repulsive in the ...
Supported by the National Natural Science Foundation of China, and the 333 Project of Jiangsu Province.
In the framework of quark-delocalization, colour-screening model, the diquark structure of pentaquark θ^+ is studied in detail under the adiabatic approximation. The calculation is carried out by using the fractiona...