dorsal/arxiv
View SchemaEven Parity $\Theta$-Pentaquark and Stable Strange Nuclear Matter
| Authors | Gerald A. Miller |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0402099 |
| URL | https://arxiv.org/abs/nucl-th/0402099 |
| DOI | 10.1103/PhysRevC.70.022202 |
| Journal | Phys.Rev.C70:022202,2004 |
Abstract
The newly discovered exotic $\Theta$ baryon of mass 1540 MeV (and very small width) truly has a very low mass, if it is a pentaquark system of even parity. A schematic model in which the coherent interaction of $u\bar s$ and $d\bar s$ pairs leads to a very large residual (non-confining) attractive interaction is introduced. This collective vibrational model accounts for the mass and small decay width to the $KN$ channel, but yields a significant coupling to the virtual $K^*N$ channel. The schematic model predicts an attractive $\Theta$-nucleon interaction strong enough to bind a $\Theta$ particle to a nucleus in a state that is stable against decay via strong interactions. The discovery of $\Theta$-nuclei could be a definitive proof that the $\Theta$ parity is even.
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"abstract": "The newly discovered exotic $\\Theta$ baryon of mass 1540 MeV (and very small\nwidth) truly has a very low mass, if it is a pentaquark system of even parity.\nA schematic model in which the coherent interaction of $u\\bar s$ and $d\\bar s$\npairs leads to a very large residual (non-confining) attractive interaction is\nintroduced. This collective vibrational model accounts for the mass and small\ndecay width to the $KN$ channel, but yields a significant coupling to the\nvirtual $K^*N$ channel. The schematic model predicts an attractive\n$\\Theta$-nucleon interaction strong enough to bind a $\\Theta$ particle to a\nnucleus in a state that is stable against decay via strong interactions. The\ndiscovery of $\\Theta$-nuclei could be a definitive proof that the $\\Theta$\nparity is even.",
"arxiv_id": "nucl-th/0402099",
"authors": [
"Gerald A. Miller"
],
"categories": [
"nucl-th",
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],
"doi": "10.1103/PhysRevC.70.022202",
"journal_ref": "Phys.Rev.C70:022202,2004",
"title": "Even Parity $\\Theta$-Pentaquark and Stable Strange Nuclear Matter",
"url": "https://arxiv.org/abs/nucl-th/0402099"
},
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