He works as a Professor at the Enrico Fermi Institute and the Kavli Institute for Cosmological Physics at the University of Chicago. His area of research is phenomenology of particle physics, namely the study of the interactions of elementary particles, with a special emphasis on collider physics, Higgs physics, the theory of Dark Matter and the origin of the asymmetry between matter and anti-matter. He held postdoctoral positions at Purdue University, the Max Planck Institute in Munich, and at the CERN Laboratory, where he also worked as a staff member from 1996 to 2000. Dr. Wagner is a Fellow of the American Physical Society and a recipient of a Humboldt Research Prize.