Eighth International Symposium on Subatomic Physics (SSP2022)

Abstract

The eighth edition of the International Symposium on Subatomic Physics (SSP2022) was held in Vienna from 29 August to 3 September 2022, one year later than originally planned due to the COVID-19 pandemic. The conference was organized by the Stefan Meyer Institute for Subatomic Physics and hosted by the University of Applied Arts. Compared to previous editions of the conference, which encompassed a wider range of topics, including dark matter and cosmology, the scientific program for SSP2022 concentrated more on fundamental symmetries and interactions in both theory and laboratory experiments, as proposed by the International Advisory Committee. The conference welcomed 74 attendees who presented 51 invited and contributed talks showcasing scientific accomplishments from around the world. These included topics on searches for lepton flavor violation and symmetries in heavy quark decays at BELLE in Japan, BESIII in Beijing, muon decay at the Paul Scherrer Institute (PSI), and Φ decays at DAΦNE in Frascati. Prospects to discover physics beyond the Standard Model, such as the g-2 measurement at Fermilab, or in high energies colliders, were also presented, as well as searches for the electric dipole moments (EDM) of the neutron, deuteron, muon, and in atoms and molecules. Double ß-decay, sterile neutrino searches, and flavor oscillations were also discussed. Results and upper limits on CPT tests with antihydrogen, muonium, and positronium were reported. The meeting ended with presentations on advanced instrumentation and on upcoming future facilities at PSI, Deutsches ElektronenSynchrotron, Mainz University, and the Japan Proton Accelerator Research Complex. The reduced in-person participation from regions such as China was overcome by two remote talks that were received with the same amount of attention and interest. The proceedings have been published in the EPJ Web of Conferences. Fruitful discussions on various physics subjects thrived during the poster session, where 17 posters were presented by master’s and Ph.D. students on their work and results. Several referees had the task of evaluating each poster, and two prizes sponsored by Nuclear Physics European Collaboration Committee were awarded at a ceremony to Alexander Boeschoten from Van Swinderen Institute in Groningen for the poster “Understanding of Systematic Effects in eEDM Searches with Diatomic Molecules” and Marlene Tüchler from the Stefan Meyer Institute for the poster “Kaonic Atom X-Ray Spectrocopy with the SIDDHARTA-2 Experiment”. The social program included a guided tour at the Museum of Applied Arts in Vienna and a reception. A public lecture took place in the picturesque Festsaal of the Austrian Academy of Sciences as part of the SSP2022 program. The talk, entitled “The Underground World of Elementary Particles,” was given in German by Prof. Stefan Paul from the Technical University of Munich (Figure 1). The general public had a unique opportunity to hear about the shortest length scales that humankind has explored so far and how laboratory experiments test theoretical models on the beginning of the universe. SSP2022 proved to be successful and enjoyable, sparking numerous fruitful debates among attendees. Following the tradition of SSP to jump continents, it was decided to continue the series with the next SSP being organized in 2025 in Japan.