dorsal/arxiv
View SchemaIn-medium Properties of $\Theta^{+}$ as a K$\pi$N structure in Relativistic Mean Field Theory
| Authors | Xian-Hui Zhong, G. X. Peng, Ping-Zhi Ning |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0501064 |
| URL | https://arxiv.org/abs/nucl-th/0501064 |
| DOI | 10.1103/PhysRevC.72.065212 |
| Journal | Phys. Rev.C 72, 065212 (2005) |
Abstract
The properties of nuclear matter are discussed with the relativistic mean-field theory (RMF).Then, we use two models in studying the in-medium properties of $\Theta^+$: one is the point-like $\Theta^*$ in the usual RMF and the other is a K$\pi$N structure for the pentaquark. It is found that the in-medium properties of $\Theta^+$ are dramatically modified by its internal structure. The effective mass of $\Theta^+$ in medium is, at normal nuclear density, about 1030 MeV in the point-like model, while it is about 1120 MeV in the model of K$\pi$N pentaquark. The nuclear potential depth of $\Theta^+$ in the K$\pi$N model is approximately -37.5 MeV, much shallower than -90 MeV in the usual point-like RMF model.
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"abstract": "The properties of nuclear matter are discussed with the relativistic\nmean-field theory (RMF).Then, we use two models in studying the in-medium\nproperties of $\\Theta^+$: one is the point-like $\\Theta^*$ in the usual RMF and\nthe other is a K$\\pi$N structure for the pentaquark. It is found that the\nin-medium properties of $\\Theta^+$ are dramatically modified by its internal\nstructure. The effective mass of $\\Theta^+$ in medium is, at normal nuclear\ndensity, about 1030 MeV in the point-like model, while it is about 1120 MeV in\nthe model of K$\\pi$N pentaquark. The nuclear potential depth of $\\Theta^+$ in\nthe K$\\pi$N model is approximately -37.5 MeV, much shallower than -90 MeV in\nthe usual point-like RMF model.",
"arxiv_id": "nucl-th/0501064",
"authors": [
"Xian-Hui Zhong",
"G. X. Peng",
"Ping-Zhi Ning"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.72.065212",
"journal_ref": "Phys. Rev.C 72, 065212 (2005)",
"title": "In-medium Properties of $\\Theta^{+}$ as a K$\\pi$N structure in Relativistic Mean Field Theory",
"url": "https://arxiv.org/abs/nucl-th/0501064"
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