(1) Faculty of Science, Helwan University, Helwan, Egypt;(2) Department of Mathematics and Theoretical Physics, Atomic Energy Authority, Cairo, Egypt;(3) Faculty of Science, Menofia University, Menofia, Egypt
Abstract:
The effect of coherent state of quarks and mesons on hadron properties has been investigated in a chiral quark model. A new parameter set is derived. A comparison with previous work shows that the properties of the nucleon and delta are greatly improved by increasing the degree of coherent and the sigma-meson mass.