Rationale

The origin of the matter-antimatter asymmetry in the Universe remains an unsolved enigma that requires physics beyond the standard model.

The dominant paradigm today is that from a very early phase the Universe has been composed almost exclusively of matter. Yet, we have high-quality astrophysical and cosmological observations that hold the potential to quantify the presence of antimatter in the Universe far beyond what has been done to date.

This workshop seeks to bring together astronomers and cosmologists with theorists and experimentalists working on antimatter. Together, we will discuss how recent and forthcoming observations of the Universe -including intriguing hints of antimatter domains- can provide new insights into the origin of the matter-antimatter asymmetry.

Topics

Local Universe: cosmic-ray antinuclei, gamma rays from antimatter annihilation, unidentified gamma-ray sources

Large-scale Universe: cosmic backgrounds (gamma rays, microwaves, gravitational waves), Big-Bang nucleosynthesis, history of large-scale structures, galaxy and star formation

Theory: baryogenesis, leptogenesis and alternative theories of the matter-antimatter asymmetry

Experiments: antimatter factories, CP violation at accelerator experiments, new physics in neutrino experiments