An introduction to particle physics.

Particles and Antiparticles

The material world is complicated, yet it is also very simple and symmetric. Analogous to two kinds of charge are two kinds of particles - particle and antiparticle.

One of the beta decay processes is the emission of positrons to reduce the nuclear positive charge. The positron is actually an antiparticle of electron, but we did not mention the antiparticle concept at that time.

Internet Resources

Electron Positron Lattice