On the Bohr-Weisskopf effect and atomic parity violation

by Prof. Jacinda Ginges (Brisbane)

Tuesday 31 May 2022, 16:15 → 18:15 Europe/Zurich

4/3-006 - TH Conference Room (CERN)

In this talk I will discuss the Bohr-Weisskopf (BW) effect, and its relevance to tests of the standard model and searches for new physics in atomic parity violation studies. The BW effect gives the finite nuclear magnetisation contribution to the hyperfine structure, and is difficult to quantify at the required level of accuracy from nuclear structure theory. I will describe how — through a combination of atomic theory and atomic and nuclear experiments — the BW effect may be determined. An accurate understanding of the BW effect is needed for reliable tests of atomic structure theory in the nuclear region, and for the development of precision atomic many-body methods. This is important for the error analysis of atomic parity violation studies, and for maximising the impact on particle physics discovery.