Z1-7305 — Interim report
1.
Ever-changing proton radius?!

In the invited plenary talk the currently best proton radius measurements were summarized, and the importance of the observed inconsistency between the hydrogen and the muonic-hydrogen data was discussed. Selected new experiments dedicated to remeasuring the radius were described, and the results of the MAMI experiment were presented.

B.04 Guest lecture

COBISS.SI-ID: 29412391
2.
Analysis of inelastic scattering of electrons on carbon

In the Master thesis the transitions from the ground state to higher energy states in 12C nucleus induced by inelastic electron scattering were studied. Using the measurements collected at the Institute for nuclear physics in Mainz the ratios between differential cross sections for transition into one of the first three excited states and the one for elastic scattering have been determined. With these ratios and by using DREPHA model to determine the values for elastic differential cross section, it was possible to obtain differential cross sections and associated form factors for the chosen transitions.

D.10 Educational activities

COBISS.SI-ID: 3000676
3.
Puzzling out the proton radius puzzle

The discrepancy between the proton charge radius extracted from the muonic hydrogen Lamb shift measurement and the best present value obtained from the elastic scattering experiments, remains unexplained and represents a burning problem of today’s nuclear physics: after more than 50 years of research the radius of a basic constituent of matter is still not understood. This paper presents a summary of the best existing proton radius measurements, followed by an overview of the possible explanations for the observed inconsistency between the hydrogen and the muonic hydrogen data. In the last part the upcoming experiments, dedicated to remeasuring the proton radius, are described.

B.04 Guest lecture

COBISS.SI-ID: 29342503