dorsal/arxiv
View SchemaDispersion Relation of the Rho-Meson at Finite Temperature and Density
| Authors | V. L. Eletsky, J. I. Kapusta |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9810052 |
| URL | https://arxiv.org/abs/nucl-th/9810052 |
| DOI | 10.1103/PhysRevC.59.2757 |
| Journal | Phys. Rev. C 59, 2757 (1999) |
Abstract
The rho-meson mass shift, width broadening, and spectral density at finite temperature and nucleon density are estimated using a general formula which relates the self-energy to the real and imaginary parts of the forward scattering amplitude on the constituents of the medium. We saturate the scattering amplitude at low energies with resonances, while at high energies a Regge approach is taken in combination with vector meson dominance; experimental data is used wherever possible. The main result is that the rho-meson becomes increasingly broad with increasing nucleon density. The spectral density is suppressed in the resonance region 600 < M < 900 MeV and enhanced in the subresonance region M < 600 MeV.
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"abstract": "The rho-meson mass shift, width broadening, and spectral density at finite\ntemperature and nucleon density are estimated using a general formula which\nrelates the self-energy to the real and imaginary parts of the forward\nscattering amplitude on the constituents of the medium. We saturate the\nscattering amplitude at low energies with resonances, while at high energies a\nRegge approach is taken in combination with vector meson dominance;\nexperimental data is used wherever possible. The main result is that the\nrho-meson becomes increasingly broad with increasing nucleon density. The\nspectral density is suppressed in the resonance region 600 \u003c M \u003c 900 MeV and\nenhanced in the subresonance region M \u003c 600 MeV.",
"arxiv_id": "nucl-th/9810052",
"authors": [
"V. L. Eletsky",
"J. I. Kapusta"
],
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"nucl-th"
],
"doi": "10.1103/PhysRevC.59.2757",
"journal_ref": "Phys. Rev. C 59, 2757 (1999)",
"title": "Dispersion Relation of the Rho-Meson at Finite Temperature and Density",
"url": "https://arxiv.org/abs/nucl-th/9810052"
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