Positron
The positron or antielectron is the particle with an electric charge of +1e, a spin of 1/2, and the same mass as an electron. It is the antiparticle of the electron. When a positron collides with an electron, annihilation occurs. Wikipedia
Antiparticle: Electron
Composition: Elementary particle
Discovered: Carl D. Anderson (1932)
Electric charge: +1 e; +1.602176634×10−19 C
Generation: First
Interactions: Gravity, electromagnetic, weak
Spin: 1/2 ħ (same as electron)