dorsal/arxiv
View SchemaThe spectral function of the omega meson in nuclear matter from a coupled-channel resonance model
| Authors | P. Muehlich, V. Shklyar, S. Leupold, U. Mosel, M. Post |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0607061 |
| URL | https://arxiv.org/abs/nucl-th/0607061 |
| DOI | 10.1016/j.nuclphysa.2006.10.037 |
| Journal | Nucl.Phys.A780:187-205,2006 |
Abstract
We calculate the spectral function of the omega meson in nuclear matter at zero temperature by means of the low-density theorem. The omega N forward scattering amplitude is calculated within a unitary coupled-channel effective Lagrangian model that has been applied successfully to the combined analysis of pion- and photon-induced reactions. While the peak of the omega spectral distribution is shifted only slightly, we find a considerable broadening of the omega meson due to resonance-hole excitations. For omega mesons at rest with respect to the surrounding nuclear medium, we find an additional width of about 60 MeV at saturation density.
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"abstract": "We calculate the spectral function of the omega meson in nuclear matter at\nzero temperature by means of the low-density theorem. The omega N forward\nscattering amplitude is calculated within a unitary coupled-channel effective\nLagrangian model that has been applied successfully to the combined analysis of\npion- and photon-induced reactions. While the peak of the omega spectral\ndistribution is shifted only slightly, we find a considerable broadening of the\nomega meson due to resonance-hole excitations. For omega mesons at rest with\nrespect to the surrounding nuclear medium, we find an additional width of about\n60 MeV at saturation density.",
"arxiv_id": "nucl-th/0607061",
"authors": [
"P. Muehlich",
"V. Shklyar",
"S. Leupold",
"U. Mosel",
"M. Post"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/j.nuclphysa.2006.10.037",
"journal_ref": "Nucl.Phys.A780:187-205,2006",
"title": "The spectral function of the omega meson in nuclear matter from a coupled-channel resonance model",
"url": "https://arxiv.org/abs/nucl-th/0607061"
},
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