2025

The Schroedinger Visiting Professor is Prof. Matthias Neubert (Mainz University).

Hosts: Prof. Gino Isidori (University of Zurich)

Schroedinger Lecture 2025

Weakly-coupled light new particles

Monday, February 24, 2025, 16.30 h (after the lecture there will be a small apero)
University of Zurich, Room Y03-G-91 (Irchel Campus)

Download Poster (JPEG, 714 KB)

Abstract:
The existence of light, weakly-interacting new particles beyond the Standard Model is a well-motivated alternative to new particles existing at the TeV scale or beyond. With the example of axion-like particles (ALPs), which offer an explanation of the puzzling absence of the electric dipole moment of the neutron, we discuss the current status of both direct searches at the LHC and in flavor experiments, and indirect searches using precision measurements of electroweak and low-energy observables. We emphasize the importance of subtle quantum effects, which generate multiple ALP couplings to the Standard Model particles even if at a high scale only a single ALP coupling is non-vanishing.