His research activity was focused in the Elementary Particle field. After working in the CLEO Collaboration at CESR he joined the European Centre for Nuclear Research (CERN) as a fellow to work in the UA2 Experiment. After the conclusion of his engagement in UA2, he started working on the search for direct CP violation in the decays of neutral K mesons (NA48 at CERN). In 2000 he joined the GLAST project. GLAST (after the launch renamed to FERMI) is an astro-particle physics partnership exploring the high energy gamma-ray universe: this mission is part of the NASA Office of Space and Science Strategic Plan. The satellite was launched on Jun 11th, 2008 and it has been collecting data since then. He has organized several international conferences in Perugia, and he is member of the International Advisory Committee of CALOR (International Conference for Calorimetry in High Energy Physics) and ScNeGHE (Science with the New Generation of High Energy Gamma-ray Experiments).