positron-electron collision

A positron-electron collision involves a positron (the electron's antimatter counterpart) meeting an electron. When they come into contact, their opposite properties cause them to annihilate each other, releasing energy primarily as gamma-ray photons—high-energy light particles. This process demonstrates the fundamental symmetry in matter and antimatter and confirms Einstein’s energy-mass equivalence principle (\(E=mc^2\)). Such collisions are studied in physics laboratories to understand antimatter behavior, test theories, and explore applications like medical imaging (PET scans), making them a key part of advanced scientific research.