Particle collision refers to the interaction between two or more particles, such as atoms or subatomic particles, when they come into contact or collide with each other. These collisions can occur at various energy levels and can result in different outcomes, including the creation of new particles or the transformation of existing ones. Particle collisions are fundamental to understanding the forces and interactions that govern the universe. In scientific research, particle collisions are often studied using large particle accelerators, like the Large Hadron Collider (LHC). These machines accelerate particles to high speeds and smash them together, allowing scientists to observe the resulting interactions. By analyzing the data from these collisions, researchers can gain insights into the fundamental building blocks of matter and the laws of physics.