dorsal/arxiv
View SchemaOpen-charm systems in cold nuclear matter
| Authors | M. F. M. Lutz, C. L. Korpa |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0510006 |
| URL | https://arxiv.org/abs/nucl-th/0510006 |
| DOI | 10.1016/j.physletb.2005.11.046 |
| Journal | Phys.Lett.B633:43-48,2006 |
Abstract
We study the spectral distributions of charmed meson with $J^P=0^-$ quantum numbers in cold nuclear matter applying a self-consistent and covariant many-body approach established previously for the nuclear dynamics of kaons. At leading orders the computation requires as input the free-space two-body scattering amplitudes only. Our results are based on the s-wave meson-nucleon amplitudes obtained recently in terms of a coupled-channel approach. The amplitudes are characterized by the presence of many resonances in part so far not observed. This gives rise to an intriguing dynamics of charmed mesons in nuclear matter. At nuclear saturation density we predict a pronounced two-mode structure of the $D^+$ mesons with a main branch pushed up by about 32 MeV. The lower branch reflects the coupling to two resonance-hole states that are almost degenerate. For the $D^-$ we obtain a single mode pushed up by about 18 MeV relative to the vacuum mode. Most spectacular are the results for the $D^+_s$ meson. The presence of an exotic resonance-hole state gives rise to a rather broad and strongly momentum dependent spectral distribution.
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"abstract": "We study the spectral distributions of charmed meson with $J^P=0^-$ quantum\nnumbers in cold nuclear matter applying a self-consistent and covariant\nmany-body approach established previously for the nuclear dynamics of kaons. At\nleading orders the computation requires as input the free-space two-body\nscattering amplitudes only. Our results are based on the s-wave meson-nucleon\namplitudes obtained recently in terms of a coupled-channel approach. The\namplitudes are characterized by the presence of many resonances in part so far\nnot observed. This gives rise to an intriguing dynamics of charmed mesons in\nnuclear matter. At nuclear saturation density we predict a pronounced two-mode\nstructure of the $D^+$ mesons with a main branch pushed up by about 32 MeV. The\nlower branch reflects the coupling to two resonance-hole states that are almost\ndegenerate. For the $D^-$ we obtain a single mode pushed up by about 18 MeV\nrelative to the vacuum mode. Most spectacular are the results for the $D^+_s$\nmeson. The presence of an exotic resonance-hole state gives rise to a rather\nbroad and strongly momentum dependent spectral distribution.",
"arxiv_id": "nucl-th/0510006",
"authors": [
"M. F. M. Lutz",
"C. L. Korpa"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/j.physletb.2005.11.046",
"journal_ref": "Phys.Lett.B633:43-48,2006",
"title": "Open-charm systems in cold nuclear matter",
"url": "https://arxiv.org/abs/nucl-th/0510006"
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