dorsal/arxiv
View SchemaNeutron halo and the impact-parameter dependence of the $\pi^+ - \pi^-$ asymmetry in heavy ion collisions
| Authors | Piotr Pawłowski, Antoni Szczurek |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0402029 |
| URL | https://arxiv.org/abs/nucl-th/0402029 |
| DOI | 10.1103/PhysRevC.70.044908 |
Abstract
The theoretical nuclear physics predictions and experimental results on antiprotonic atoms lead to different proton and neutron spatial distributions. At CERN SPS energies production of positive and negative pions differs for $pp$, $pn$, $np$ and $nn$ scattering. These two facts lead to an impact parameter dependence of the $\pi^+$ to $\pi^-$ ratio in $^{208}Pb + ^{208}Pb$ collisions. A recent experiment at CERN seems to confirm qualitatively these predictions. The results for two models considered are almost identical. It may open a new possibility for determination of neutron density distribution in nuclei.
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"abstract": "The theoretical nuclear physics predictions and experimental results on\nantiprotonic atoms lead to different proton and neutron spatial distributions.\nAt CERN SPS energies production of positive and negative pions differs for\n$pp$, $pn$, $np$ and $nn$ scattering. These two facts lead to an impact\nparameter dependence of the $\\pi^+$ to $\\pi^-$ ratio in $^{208}Pb + ^{208}Pb$\ncollisions. A recent experiment at CERN seems to confirm qualitatively these\npredictions. The results for two models considered are almost identical. It may\nopen a new possibility for determination of neutron density distribution in\nnuclei.",
"arxiv_id": "nucl-th/0402029",
"authors": [
"Piotr Paw\u0142owski",
"Antoni Szczurek"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.70.044908",
"title": "Neutron halo and the impact-parameter dependence of the $\\pi^+ - \\pi^-$ asymmetry in heavy ion collisions",
"url": "https://arxiv.org/abs/nucl-th/0402029"
},
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