dorsal/arxiv
View SchemaStudy on N Omega-bar systems in a chiral quark model
| Authors | D. Zhang, F. Huang, L. R. Dai, Y. W. Yu, Z. Y. Zhang |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0609008 |
| URL | https://arxiv.org/abs/nucl-th/0609008 |
| DOI | 10.1103/PhysRevC.75.024001 |
| Journal | Phys.Rev.C75:024001,2007 |
Abstract
The N Omega-bar systems with spin S=1 and S=2 are dynamically investigated within the framework of the chiral SU(3) quark model and the extended chiral SU(3) quark model by solving the resonating group method (RGM) equation. The model parameters are taken from our previous work, which gave a good description of the energies of the baryon ground states, the binding energy of deuteron, and the experimental data of the nucleon-nucleon (NN) and nucleon-hyperon (NY) scattering processes. The results show that N Omega-bar states with spin S=1 and S=2 can be bound both in the chiral SU(3) and extended chiral SU(3) quark models, and the binding energies are about 28-59 MeV. When the annihilation effect is considered, the binding energies increase to about 37-130 MeV, which indicates the annihilation effect plays a relatively important role in forming an N Omega-bar bound state. At the same time, the N Omega-bar elastic scattering processes are also studied. The S, P, D partial wave phase shifts and the total cross sections of S=1 and S=2 channels have been calculated by solving the RGM equation for scattering problems.
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"abstract": "The N Omega-bar systems with spin S=1 and S=2 are dynamically investigated\nwithin the framework of the chiral SU(3) quark model and the extended chiral\nSU(3) quark model by solving the resonating group method (RGM) equation. The\nmodel parameters are taken from our previous work, which gave a good\ndescription of the energies of the baryon ground states, the binding energy of\ndeuteron, and the experimental data of the nucleon-nucleon (NN) and\nnucleon-hyperon (NY) scattering processes. The results show that N Omega-bar\nstates with spin S=1 and S=2 can be bound both in the chiral SU(3) and extended\nchiral SU(3) quark models, and the binding energies are about 28-59 MeV. When\nthe annihilation effect is considered, the binding energies increase to about\n37-130 MeV, which indicates the annihilation effect plays a relatively\nimportant role in forming an N Omega-bar bound state. At the same time, the N\nOmega-bar elastic scattering processes are also studied. The S, P, D partial\nwave phase shifts and the total cross sections of S=1 and S=2 channels have\nbeen calculated by solving the RGM equation for scattering problems.",
"arxiv_id": "nucl-th/0609008",
"authors": [
"D. Zhang",
"F. Huang",
"L. R. Dai",
"Y. W. Yu",
"Z. Y. Zhang"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.75.024001",
"journal_ref": "Phys.Rev.C75:024001,2007",
"title": "Study on N Omega-bar systems in a chiral quark model",
"url": "https://arxiv.org/abs/nucl-th/0609008"
},
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