Theoretical seminar | 20 January 2021

St. Petersburg State University
Heavy-ion collisions at the critical regimes and highly accurate atomic structure calculations
Although the current Standard Model (SM) is a very successful and accurate description of particle physics, it is inconsistent with the existence of our Universe. Extension of the SM test region and search for new physics signatures can be performed via low-energy measurements. This talk focuses on some specific examples of atomic physics study. The first one is based on low-energy heavy ion-atom collisions up to the critical regime, where the total nuclear charge number exceeds the critical value (~173) and the initially neutral vacuum can spontaneously decay into the charged vacuum and two positrons. Then, highly accurate measurements in atoms and ions aimed at the electron neutrino mass determination and some promising scenarios of the nonlinearities in the King plot investigation, indicated physics beyond the Standard Model in the form of a new bosonic force carrier, will be considered.