Collider experiment finds antimatter behaves just like ordinary matter
Brookhaven National Laboratory
Tightly bunched antiprotons stick together, just like their proton cousins.
Physicists sifting through subatomic shrapnel inside a particle accelerator have made the first analysis of the interaction between antiprotons, particles of antimatter that are negatively charged but otherwise nearly identical to protons. The findings, published online November 4 in Nature, reveal that the strong nuclear force securely binds antiprotons in close proximity with the same intensity that it does for protons inside the nuclei of atoms.
The study provides insight into the structure of antimatter nuclei, which consist of bound antiprotons and antineutrons. It also adds to the tally of papers finding no differences in the behavior of antimatter and ordinary matter. Any discrepancy could help scientists determine why matter, and not antimatter, dominates the universe.