Particle collisions refers to the study of the interactions between subatomic particles, such as protons, electrons, and neutrons, when they collide with each other at high speeds in particle accelerators. These collisions provide valuable insights into the fundamental forces and particles that make up the universe. Researchers analyze the particles produced in these collisions to better understand the properties of matter, the origins of the universe, and phenomena such as dark matter and antimatter. Particle collisions are a crucial component of experimental particle physics and are conducted at facilities such as the Large Hadron Collider (LHC) at CERN.