Antineutron

The antineutron is the antiparticle of the neutron. It was discovered by Bruce Cork in the year 1956, a year after the antiproton was discovered. An antineutron has the same mass as a neutron, and no net electric charge. However, it is different from a neutron by being composed of antiquarks, rather than quarks. In particular, the antineutron consists of two anti – down quarks and one anti – up quark.

Since the antineutron is electrically neutral, it cannot easily be observed directly. Instead, the products of its annihilation with ordinary matter are observed.

See also

• list of particles
• antimatter

External link

• Elementary particles – includes information about antineutron discovery

• Is Antineutron the Same as Neutron? – explains how the antineutron differs from the regular neutron despite having the same, that is zero, charge

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