Comparison of recoil polarization in the C12(e→,ep→) process for protons extracted from s and p shells

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Abstract

We present the first measurements of the double ratio of the polarization-transfer components (Px/Pz)p/(Px/Pz)s for knock-out protons from the s and p shells in C12 measured by the C12(e→,ep→) reaction in quasi-elastic kinematics. The data are compared to theoretical predictions in the relativistic distorted-wave impulse approximation. Our results show that the differences between s- and p-shell protons, observed when compared at the same initial momentum (missing momentum), largely disappear when the comparison is done at the same proton virtuality. We observe no difference in medium modifications between protons from the s and p shells with the same virtuality in spite of the large differences in the respective nuclear densities.

Original languageEnglish (US)
Article number135903
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume811
DOIs
StatePublished - Dec 10 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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