Sparticles
Sparticle is a fantastic word that conjures images of Spartacus and particles, but it is only partially true. The "s" stands for "supersymmetric" in the portion. Meaning that the existence of sparticles, which are supersymmetric particles, could rip open the physics' enigmas like a coconut.
The mainstream model of particle physics, as useful as it is, has numerous holes, as we have seen. Describe dark matter. How does gravity function? Why do muons jiggle? Questions abound on the origin of mass and other topics. There are enough unanswered concerns to make you wonder if the conventional model is even still worthwhile to pursue, or if a completely new model needs to be developed. Unless, of course, you can squeeze some particles in.
A supersymmetry hypothesis can explain a lot of the problems we have with particle physics. This implies that each particle has a supersymmetrical partner. Theoretically, these companion particles could close a variety of gaps in our knowledge of the universe. To find these entities, they even created the Large Hadron Collider. It didn't work, too. This doesn't necessarily imply that the theory is incorrect; rather, it only underscores the difficulty of physics and the length of time required to comprehend the basics of reality.