Hadron Properties in a Chiral Quark-Sigma Model

Details Hadron Properties in a Chiral Quark-Sigma Model Hadron Properties in a Chiral Quark-Sigma Model

2011-10-12

arxiv.org/abs/1110.2746v1

Physics

General Physics

7 pages. Accepted for publication in J. Egypt. Math. Soc. (2005)

Scientific paper

Within a chiral quark sigma model in which quarks interact via the exchange of sigma and pi-mesons, hadron properties are investigated. This model of the nucleon and delta is based on the idea that strong QCD forces on very short distances (a small length scales 0.2- 1 fm) result in hidden chiral SU(2)xSU(2) symmetry and that there is a separation of roles between these forces which are responsible for binding quarks in hadrons and the forces which produce absolute confinement. We have solved the field equations in the mean field approximation for the hedgehog baryon state with different sets of model parameters. A new parametrization which well describe the nucleon properties has been introduced and compared with experimental data.

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