U.S. Department of Energy

Pacific Northwest National Laboratory


A | C | D | E | H | L | N | O | P | S | T | W

When matter is produced, an equal amount of antimatter should be produced. Particles are produced as matter-antimatter pairs.

Particle candidates

Theoretically favored particles that may exist in dark matter include WIMPS and Axions.

Particle physics

Particle physics advances the understanding of the basic building blocks of the Universe. IT is a discovery science defined by the search for new particles and new interactions, as well as by tests of physical principals. The Office of High Energy Physics promotes a broad, long-term U.S. particle physics program centered on five science drivers that are intertwined.


The charged proton was discovered in the early days of nuclear physics (1918).