Measurement of In-Medium Modifications of Proton Form-FactorsBrecelj, Tilen (Avtor) Širca, Simon (Mentor) polarized beamelastic electron scatteringinelastic electron scattering to specific statesinelastic electron scattering to continuumlepton-induced reactionselectric and magnetic charged-particle spectrometerstracking and position-sensitiveMeasurements of the polarization transfer in the reactions of the type $A(\vec{e},e'\vec{p})A-1$, where the polarization is transferred from incident polarized electrons to free or bound target protons, are a relatively new method used for the investigation of the nucleon structure and different nuclear effects by means of spin degrees of freedom. So far polarization transfer measurements have been performed on $^1\text{H}$, $^2\text{H}$, $^4\text{He}$ and $^{16}\text{O}$. The aim of my doctoral research was to perform the first polarization transfer measurement on $^{12}\text{C}$ and analyse the collected data. In this work the theoretical background, the experimental setup, the data analysis and the results of the measurement of the polarization transfer in the $^{12}\text{C}(\vec{e},e'\vec{p})^{11}\text{B}$ process are presented. The experimentally obtained polarization transfer to protons ejected from $^{12}\text{C}$ is compared to the theoretically predicted polarization transfer as only theoretical models, which can reproduce the experimental data to a large extent, can provide a good understanding of the underlying physics processes influencing the measured quantities. Furthermore, the results obtained in the discussed experiment are compared also to the results of polarization transfer measurements performed on other atomic nuclei. The experimental data is usually presented as the ratio of the transverse and the longitudinal components of the polarization transfer to bound protons divided by the same ratio obtained for free protons. If this double-ratio is presented in the virtuality domain the mutual agreement between the experimental data obtained on different nuclei is unexpectedly good, although different experiments have been performed at different experimental setups. This implies that the discussed technique is suitable for the investigation of the interactions of the atomic nucleus with the embedded protons. In addition, the results of the polarization transfer measurements performed on $^{12}\text{C}$ cover a large kinematic range and were obtained with unprecedented precision. They may thus be helpful in developing theoretical models for the description of the polarization transfer, different nuclear phenomena and the influence of the atomic nucleus to the structure of the embedded protons.20182018-06-18 07:45:07Doktorsko delo/naloga101577VisID: 87342COBISS_ID: 3208548sl