Proton-proton interactions refer to the collision and interaction of two protons, which are positively charged particles found in the nucleus of an atom. These interactions can occur in particle accelerators, where high-energy protons are collided to study the fundamental properties of particles and the forces that govern their interactions. Proton-proton interactions play a crucial role in particle physics research, as they provide valuable insights into the fundamental constituents of matter and the mechanisms that govern their behavior. Studying proton-proton interactions can help scientists better understand the structure of matter, the nature of forces in the universe, and the origins of the universe itself.