Standard Model

The Standard Model is a comprehensive theory that describes three fundamental forces: electromagnetic, weak, and strong interactions. It was developed through stages in the latter half of the 20th century, with significant contributions from many scientists worldwide. The current formulation was finalized in the mid-1970s after experimental confirmation of quarks' existence.

The Standard Model successfully predicts various properties of weak neutral currents and the W and Z bosons with great accuracy. However, it leaves some physical phenomena unexplained, such as the matter-antimatter asymmetry and the lack of a full theory of gravitation as described by general relativity.

Despite its successes, the Standard Model is not a complete theory of fundamental interactions. It does not fully explain why there is more matter than antimatter, nor does it incorporate the full theory of gravitation as described by general relativity. These limitations highlight the ongoing quest for a more comprehensive understanding of the universe's fundamental forces and particles.