So instead of discovering new particles in wave accelerators, they are really discovering new types of quantum waves. There are limiting environments where the particle approximation is a good. An example is the flow of electron waves in a conductor. The waves interact so often with the medium they are in, that after each interaction, the electron waves have not had a chance to spread out very much before the next interaction. In such cases the waves are so highly confined that it is appropriate to refer to them as particles, but they really are just highly localized packets of waves.
Super conductors are a different story.
It is conceptually easy to understand how waves can pass through a medium without interacting with it. I would be very interested if you know of any quantum theory that directly derives the properties of a particle rather than via interpretation. UTC Well, that is not correct.