Speaker
Description
Nuclear root-mean-square are fundamental benchmarks bridging various fields of physics. They serves as indispensable input parameters for nuclear-, atomic-, and molecular-physics calculations. Reliable rms radii are crucial for precision tests of quantum electrodynamics, for the determination of fundamental constants, and for many searches for physics beyond the Standard Model. There are two main methods to determine absolute nuclear radii: electron scattering and muonic atom spectroscopy. The results of both, together with combined analyses, are tabulated for further use. In my talk, I will tell about the long-standing fine-structure anomaly in muonic atoms, present the most recent advances in the determination of nuclear radii from muonic atom spectroscopy and will discuss the most typical underlying problems with the current values.