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$π^+ - π^-$ Asymmetry and the Neutron Skin in Heavy Nuclei

Antoni Szczurek·Piotr Pawlowski
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Abstract

In heavy nuclei the spatial distribution of protons and neutrons is different. At CERN SPS energies production of $π^+$ and $π^-$ differs for $pp$, $pn$, $np$ and $nn$ scattering. These two facts lead to an impact parameter dependence of the $π^+$ to $π^-$ ratio in $^{208}Pb + ^{208}Pb$ collisions. A recent experiment at CERN seems to confirm qualitatively these predictions. It may open a possibility for determination of neutron density distribution in nuclei.

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Antoni Szczurek, Piotr Pawlowski. 2004-09-17. $π^+ - π^-$ Asymmetry and the Neutron Skin in Heavy Nuclei. https://doi.org/10.1142/s0217751x05021956

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