Muons are subatomic particles that are similar to electrons but have a much greater mass. They are classified as leptons and are considered to be elementary particles, meaning they are not composed of smaller subatomic particles. Muons are created in high-energy processes, such as the decay of other particles or collisions in particle accelerators. Research on muons involves studying their behavior and interactions with other particles in order to understand fundamental particles and forces in the universe. Muons have been used in various scientific studies, such as in particle physics experiments to test the Standard Model of particle physics and in studies of materials properties using muon spin spectroscopy. Overall, research on muons plays a crucial role in advancing our understanding of the fundamental building blocks of the universe and the forces that govern their behavior.