dorsal/arxiv
View SchemaProbing the antikaon potential by K$^-$A elastic scattering
| Authors | A. Sibirtsev, W. Cassing |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9909053 |
| URL | https://arxiv.org/abs/nucl-th/9909053 |
Abstract
We extract the antikaon potential from differential data on elastic $K^-A$ scattering within Glauber theory at an antikaon momentum of 800 MeV/c. The $K^-N$ cross section at densities up to 0.1 $fm^3$ is found to be close to the value given in free space $K^-p$ and $K^-n$ interactions (averaged over the number of protons and neutrons) whereas the ratio $\alpha$ of the real to imaginary part of the forward scattering amplitude $f(0)$ differs from the ratio $\alpha$ in free space indicating a dropping of $Re f(0)$ at finite nuclear density. The extrapolated $K^-$ potential at a momentum of 0.8 GeV/c amounts to $\approx $--28 MeV at density $\rho_0$ which is substantially less than the values extracted from kaonic atoms at zero momentum or heavy-ion data at 300 MeV/c${\leq}p_K{\leq}$600 MeV/c. We, furthermore, investigate the perspectives of scattering experiments on $^{12}C$ at low ($\approx$300 MeV/c) and high ($\approx$1.2 GeV/c) momenta.
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"abstract": "We extract the antikaon potential from differential data on elastic $K^-A$\nscattering within Glauber theory at an antikaon momentum of 800 MeV/c. The\n$K^-N$ cross section at densities up to 0.1 $fm^3$ is found to be close to the\nvalue given in free space $K^-p$ and $K^-n$ interactions (averaged over the\nnumber of protons and neutrons) whereas the ratio $\\alpha$ of the real to\nimaginary part of the forward scattering amplitude $f(0)$ differs from the\nratio $\\alpha$ in free space indicating a dropping of $Re f(0)$ at finite\nnuclear density. The extrapolated $K^-$ potential at a momentum of 0.8 GeV/c\namounts to $\\approx $--28 MeV at density $\\rho_0$ which is substantially less\nthan the values extracted from kaonic atoms at zero momentum or heavy-ion data\nat 300 MeV/c${\\leq}p_K{\\leq}$600 MeV/c. We, furthermore, investigate the\nperspectives of scattering experiments on $^{12}C$ at low ($\\approx$300 MeV/c)\nand high ($\\approx$1.2 GeV/c) momenta.",
"arxiv_id": "nucl-th/9909053",
"authors": [
"A. Sibirtsev",
"W. Cassing"
],
"categories": [
"nucl-th"
],
"title": "Probing the antikaon potential by K$^-$A elastic scattering",
"url": "https://arxiv.org/abs/nucl-th/9909053"
},
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