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arXiv · 1212.3976

Nuclear Density Dependence of In-Medium Polarization

Guy Ron·Wim Cosyn·Eli Piasetzky·Jan Ryckebusch·Jechiel Lichtenstadt
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Abstract

It is shown that polarization transfer measurements $(\vec{e},e'\vec{p})$ on a specific target nucleus can provide constraints on the ratio of the in-medium electric to magnetic form factor. Thereby one exploits the fact that proton knockout from single-particle levels exhibit a specific sensitivity to the effective nuclear density. It is shown that in $^{12}$C the effective nuclear density for $s$-shell knockout is about twice as high as for $p$-shell knockout. With current model predictions for the in-medium form factors, one obtains measurable modifications of the order of 5% in the ratios of the double polarization observables between those single-particle levels.

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Guy Ron, Wim Cosyn, Eli Piasetzky, Jan Ryckebusch, Jechiel Lichtenstadt. 2012-12-17. Nuclear Density Dependence of In-Medium Polarization. https://doi.org/10.1103/physrevc.87.028202

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