dorsal/arxiv
View SchemaMedium effects in high energy heavy-ion collisions
| Authors | C. M. Ko, G. Q. Li |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9611027 |
| URL | https://arxiv.org/abs/nucl-th/9611027 |
| DOI | 10.1088/0954-3899/22/12/002 |
| Journal | J.Phys.G22:1673-1726,1996 |
Abstract
The change of hadron properties in dense matter based on various theoretical approaches are reviewed. Incorporating these medium effects in the relativistic transport model, which treats consistently the change of hadron masses and energies in dense matter via the scalar and vector fields, heavy-ion collisions at energies available from SIS/GSI, AGS/BNL, and SPS/CERN are studied. This model is seen to provide satisfactory explanations for the observed enhancement of kaon, antikaon, and antiproton yields as well as soft pions in the transverse direction from the SIS experiments. In the AGS heavy-ion experiments, it can account for the enhanced $K^+/\pi^+$ ratio, the difference in the slope parameters of the $K^+$ and $K^-$ transverse kinetic energy spectra, and the lower apparent temperature of antiprotons than that of protons. This model also provides possible explanations for the observed enhancement of low-mass dileptons, phi mesons, and antilambdas in heavy-ion collisions at SPS energies. Furthermore, the change of hadron properties in hot dense matter leads to new signatures of the quark-gluon plasma to hadronic matter transition in future ultrarelativistic heavy-ion collisions at RHIC/BNL.
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"abstract": "The change of hadron properties in dense matter based on various theoretical\napproaches are reviewed. Incorporating these medium effects in the relativistic\ntransport model, which treats consistently the change of hadron masses and\nenergies in dense matter via the scalar and vector fields, heavy-ion collisions\nat energies available from SIS/GSI, AGS/BNL, and SPS/CERN are studied. This\nmodel is seen to provide satisfactory explanations for the observed enhancement\nof kaon, antikaon, and antiproton yields as well as soft pions in the\ntransverse direction from the SIS experiments. In the AGS heavy-ion\nexperiments, it can account for the enhanced $K^+/\\pi^+$ ratio, the difference\nin the slope parameters of the $K^+$ and $K^-$ transverse kinetic energy\nspectra, and the lower apparent temperature of antiprotons than that of\nprotons. This model also provides possible explanations for the observed\nenhancement of low-mass dileptons, phi mesons, and antilambdas in heavy-ion\ncollisions at SPS energies. Furthermore, the change of hadron properties in hot\ndense matter leads to new signatures of the quark-gluon plasma to hadronic\nmatter transition in future ultrarelativistic heavy-ion collisions at RHIC/BNL.",
"arxiv_id": "nucl-th/9611027",
"authors": [
"C. M. Ko",
"G. Q. Li"
],
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"doi": "10.1088/0954-3899/22/12/002",
"journal_ref": "J.Phys.G22:1673-1726,1996",
"title": "Medium effects in high energy heavy-ion collisions",
"url": "https://arxiv.org/abs/nucl-th/9611027"
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