dorsal/arxiv
View SchemaKaon and antikaon properties in cold nuclear medium
| Authors | C. L. Korpa, M. F. M. Lutz |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0404088 |
| URL | https://arxiv.org/abs/nucl-th/0404088 |
| DOI | 10.1556/APH.22.2005.1-2.4 |
| Journal | Acta Phys.Hung.A22:21-28,2005 |
Abstract
We present results of a self-consistent calculation for the kaon and antikaon spectral functions in cold nuclear matter, using as input the kaon-nucleon and antikaon-nucleon scattering amplitudes of the vacuum. We investigate the effect of in-medium pion dressing on the antikaon-nucleon scattering amplitudes and antikaon spectral function. We find the influence of pion dressing to be minor on the antikaon spectral function and limited on the hyperon resonances causing only a small additional broadening. An exception is the \Sigma(1690). At nuclear saturation density an attractive mass shift of about 20 MeV and width of about 130 MeV is obtained. The kaon shows a repulsive mass increase of 36 MeV and a small width of the quasiparticle peak at saturation density.
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"abstract": "We present results of a self-consistent calculation for the kaon and antikaon\nspectral functions in cold nuclear matter, using as input the kaon-nucleon and\nantikaon-nucleon scattering amplitudes of the vacuum. We investigate the effect\nof in-medium pion dressing on the antikaon-nucleon scattering amplitudes and\nantikaon spectral function. We find the influence of pion dressing to be minor\non the antikaon spectral function and limited on the hyperon resonances causing\nonly a small additional broadening. An exception is the \\Sigma(1690). At\nnuclear saturation density an attractive mass shift of about 20 MeV and width\nof about 130 MeV is obtained. The kaon shows a repulsive mass increase of 36\nMeV and a small width of the quasiparticle peak at saturation density.",
"arxiv_id": "nucl-th/0404088",
"authors": [
"C. L. Korpa",
"M. F. M. Lutz"
],
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"doi": "10.1556/APH.22.2005.1-2.4",
"journal_ref": "Acta Phys.Hung.A22:21-28,2005",
"title": "Kaon and antikaon properties in cold nuclear medium",
"url": "https://arxiv.org/abs/nucl-th/0404088"
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