dorsal/arxiv
View SchemaKaon versus Antikaon Production at SIS Energies
| Authors | W. Cassing, E. L. Bratkovskaya, U. Mosel, S. Teis, A. Sibirtsev |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9609050 |
| URL | https://arxiv.org/abs/nucl-th/9609050 |
| DOI | 10.1016/S0375-9474(96)00461-7 |
| Journal | Nucl.Phys.A614:415-432,1997 |
Abstract
We analyse the production and propagation of kaons and antikaons in Ni + Ni reactions from 0.8--1.85 GeV/u within a coupled channel transport approach including the channels $BB \to K^+YN, \pi B\to K^+Y, BB \to NN K \bar{K}, \pi B\to N K\bar{K}, K^+B\to K^+B, \bar{K} B\to \bar{K}B, Y N\to \bar{K} NN, \pi \pi\to K \bar{K}$ as well as $\pi Y\to \bar{K}N$ and $\bar{K} N\to \pi Y$ for the antikaon absorption. Whereas the experimental $K^+$ spectra can be reproduced without introducing any selfenergies for the mesons in Ni + Ni collisions from 0.8 to 1.8 GeV/u, the $K^-$ yield is underestimated by a factor of 5--7 at 1.66 and 1.85 GeV/u. However, introducing density dependent antikaon masses as proposed by Kaplan and Nelson, the antikaon spectra can be reasonably well described.
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"abstract": "We analyse the production and propagation of kaons and antikaons in Ni + Ni\nreactions from 0.8--1.85 GeV/u within a coupled channel transport approach\nincluding the channels $BB \\to K^+YN, \\pi B\\to K^+Y, BB \\to NN K \\bar{K}, \\pi\nB\\to N K\\bar{K}, K^+B\\to K^+B, \\bar{K} B\\to \\bar{K}B, Y N\\to \\bar{K} NN, \\pi\n\\pi\\to K \\bar{K}$ as well as $\\pi Y\\to \\bar{K}N$ and $\\bar{K} N\\to \\pi Y$ for\nthe antikaon absorption. Whereas the experimental $K^+$ spectra can be\nreproduced without introducing any selfenergies for the mesons in Ni + Ni\ncollisions from 0.8 to 1.8 GeV/u, the $K^-$ yield is underestimated by a factor\nof 5--7 at 1.66 and 1.85 GeV/u. However, introducing density dependent antikaon\nmasses as proposed by Kaplan and Nelson, the antikaon spectra can be reasonably\nwell described.",
"arxiv_id": "nucl-th/9609050",
"authors": [
"W. Cassing",
"E. L. Bratkovskaya",
"U. Mosel",
"S. Teis",
"A. Sibirtsev"
],
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"nucl-th"
],
"doi": "10.1016/S0375-9474(96)00461-7",
"journal_ref": "Nucl.Phys.A614:415-432,1997",
"title": "Kaon versus Antikaon Production at SIS Energies",
"url": "https://arxiv.org/abs/nucl-th/9609050"
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