Description of SU(3)s-wave andp-wave baryons
- 4 September 2003
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 68 (3) , 034001
- https://doi.org/10.1103/physrevc.68.034001
Abstract
We investigate the structure of the SU(3) octet and decuplet baryons employing a constituent chiral quark model. We solve the ground and s- and p-wave excited states of the three-quark system with many range Gaussian bases. This method, which we employ here, has been shown to work quite nicely to describe the structure of the SU(3) s-wave baryons. In this work, we extend our research to the SU(3) p-wave baryons including the tensor term. It is found that the mass differences between positive and negative parity states are well reproduced. It is also found that the pseudoscalar (ps) meson exchange potential plays a very important role to lower the mass of the nucleon resonance (Roper). We also discuss how the semirelativistic approach works in the chiral quark model and how to treat the potential terms consistently in the semirelativistic approach.
Keywords
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