dorsal/arxiv
View SchemaIn-medium kaon and antikaon properties in the quark-meson coupling model
| Authors | K. Tsushima, K. Saito, A. W. Thomas, S. V. Wright |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9712044 |
| URL | https://arxiv.org/abs/nucl-th/9712044 |
| DOI | 10.1016/S0370-2693(98)00488-2 |
| Journal | Phys.Lett.B429:239-246,1998; Erratum.ibid.B436:453,1998 |
Abstract
The properties of the kaon, $K$, and antikaon, $\kbar$, in nuclear medium are studied in the quark-meson coupling (QMC) model. Employing a constituent quark-antiquark (MIT bag model) picture, their excitation energies in a nuclear medium at zero momentum are calculated within mean field approximation. The scalar, and the vector mesons are assumed to couple directly to the nonstrange quarks and antiquarks in the $K$ and $\kbar$ mesons. It is demonstrated that the $\rho$ meson induces different mean field potentials for each member of the isodoublets, $K$ and $\kbar$, when they are embedded in asymmetric nuclear matter. Furthermore, it is also shown that this $\rho$ meson potential is repulsive for the $K^-$ meson in matter with a neutron excess, and renders $K^-$ condensation less likely to occur.
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"abstract": "The properties of the kaon, $K$, and antikaon, $\\kbar$, in nuclear medium are\nstudied in the quark-meson coupling (QMC) model. Employing a constituent\nquark-antiquark (MIT bag model) picture, their excitation energies in a nuclear\nmedium at zero momentum are calculated within mean field approximation. The\nscalar, and the vector mesons are assumed to couple directly to the nonstrange\nquarks and antiquarks in the $K$ and $\\kbar$ mesons. It is demonstrated that\nthe $\\rho$ meson induces different mean field potentials for each member of the\nisodoublets, $K$ and $\\kbar$, when they are embedded in asymmetric nuclear\nmatter. Furthermore, it is also shown that this $\\rho$ meson potential is\nrepulsive for the $K^-$ meson in matter with a neutron excess, and renders\n$K^-$ condensation less likely to occur.",
"arxiv_id": "nucl-th/9712044",
"authors": [
"K. Tsushima",
"K. Saito",
"A. W. Thomas",
"S. V. Wright"
],
"categories": [
"nucl-th",
"astro-ph",
"hep-ph"
],
"doi": "10.1016/S0370-2693(98)00488-2",
"journal_ref": "Phys.Lett.B429:239-246,1998; Erratum.ibid.B436:453,1998",
"title": "In-medium kaon and antikaon properties in the quark-meson coupling model",
"url": "https://arxiv.org/abs/nucl-th/9712044"
},
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