Nuclear Density Dependence of In-Medium Polarization

Abstract

It is shown that polarization transfer measurements $(\vec{e},e^{\prime }\vec{p})$ 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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Cited by in corpus (4)

• Measurement of polarization-transfer to bound protons in carbon and its virtuality dependence
• Polarization transfer to bound protons measured by quasi-elastic electron scattering on ${}^{12}$C
• Comparison of recoil polarization in the ${}^{12}\mathrm{C}(\vec{e},e^{\prime }\vec{p})$ process for protons extracted from $s$ and $p$ shell
• Measurement of polarization transfer in the quasi-elastic ${}^{40}\mathrm{Ca}(\vec{e},e^{\prime }\vec{p})$ process