International Physics School on Muon Dipole Moments and Hadronic Effects — in Memoriam Simon Eidelman – with more than 70 participants organized by JGU Mainz

The concept of this school was to bring together young researchers involved in the global effort of investigating the large excess of the measured value of the muon anomalous magnetic moment over the Standard Model prediction. Earlier this year, the Muon g-2 experiment at Fermilab released their long-awaited result which, to everyone's excitement, showed a strengthening of the discrepancy with the Standard Model (in total 4.2 standard deviations). This result fortified both the possibility of New Physics and the strong interest in this school.

The school took place this year from 30th of August to 2nd of September, with more than seventy active participants from all over the world and eight separate lectures given by invited experts. The schedule was adapted to allow for participation ranging from Chicago to Tokyo but still left ample time for questions and longer discussions, both in the lecture room as well as in the dedicated virtual event platform. The participating students were offered a set of selected preparatory exercises. Among the handed in replies, three winners were given a copy of the book "The Anomalous Magnetic Moment of the Muon" by Friedrich Jegerlehner.

This was the second edition of this school, which was originally planned to take place in the middle of the historical center of Mainz but had to be postponed and shifted to an online format due to the covid-19 pandemic. The first edition took place in 2018 at the Budker Institute of Nuclear Physics in Novosibirsk, Russia. This school was initiated by our dear colleague and co-organizer Simon Eidelman, who sadly passed away in the beginning of this summer, and who was honored by his friends and colleagues throughout this school.