An international team of scientists and engineers are working together at the High Energy Accelerator Research Organisation (KEK) in Tsukuba, Japan. Electrons and positrons are slammed together in a particle accelerator at very high energies. The result of these collisions will be studied using the BELLE-II-detector to learn about CP symmetry violation. The idea here is that the equations used to describe matter suggest that you should be able to switch a particle with it's anti-particle, and the Charge and Parity should work out the same. However, everything around us seems to be made of matter, not antimatter. So why, if the equations suggest that these should be equally probable. This is one of the things that the Belle experiment is examining.
This LEGO model was on display last year at the funding agency of the KEK. I don't know the name of the builder.