This led him to predict the existence of a positron, the antimatter counterpart of the electron.

Usually, the reactants are deuterium, an isotope of hydrogen, and antideuterium (its antimatter counterpart).

Antihydrogen is the antimatter counterpart of hydrogen.

Normally this process, called double-beta decay, is accompanied by the emission of two antineutrinos, the antimatter counterparts of neutrinos.

The machine hurls clusters of negatively charged electrons into oncoming clusters of their antimatter counterparts, positrons.

The positron, the antimatter counterpart of the electron, was originally conceived of as a hole in the Dirac sea, well before its experimental discovery in 1932.

When certain subatomic particles called kaons decay, they break into a charged pion, a neutrino and either an electron or its antimatter counterpart, a positron.

A Penning trap is a research apparatus capable of trapping individual charged particles and their antimatter counterparts.

The antihydrogen atom is the antimatter counterpart of the hydrogen atom.

All the matter in the universe should thus have an antimatter counterpart.