Matter-Antimatter Asymmetry in Nature

The LHCb experiment at the LHC at CERN is studying the decay of particles that contain a b-quark. Since the b-quark is one of the heavier quark types, many different interactions can be studied, and as such the Standard Model of particle physics is scrutinized in detail. The foundations of our understanding of elementary particles in the Standard Model are heavily based on symmetry arguments. The b-quark is particularly sensitive to probe the symmetries, not in the least the intriguing (a)symmetry between matter and antimatter in the laboratory and the universe. In this presentation the symmetries underlying the Standard Model will be reviewed, and the latest results on matter-antimatter differences will be shown.