The study of elementary particle physics is at an important juncture. The Standard Model has proven to be a remarkably successful description of essentially all experimental phenomena. Still, there are significant gaps in our knowledge of the micro-physical universe. For example, we still do not know the origin of dark matter or dark energy, we do not know the source of spontaneous symmetry breaking, which is responsible for the origin of mass, and we have not found the source of CP violation that is responsible for the dominance of matter over antimatter.
We have good reason to believe that spontaneous symmetry breaking (SSB) as described by the Minimal Standard Model is unlikely to be correct or complete. The theory has unstable high energy behavior and such pathologies are an indication that new phenomena are lurking at larger mass scales. These phenomena may contribute to the mass and energy balance of the universe.