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"Antineutrons Produced from Antiprotons in Charge-Exchange Collisions". NNN 2002 Workshop on "Large Detectors for Proton Decay, Supernovae and Atmospheric Neutrinos and Low Energy Neutrinos from High Intensity Beams" at CERN. "Neutron → Antineutron Oscillations" (PDF). Archived from the original on 27 September 2011. "Neutron-Anti-Neutron Oscillation: Theory and Phenomenology". The antineutron was discovered in proton–antiproton collisions at the Bevatron ( Lawrence Berkeley National Laboratory) by the team of Bruce Cork, Glen Lambertson, Oreste Piccioni, and William Wenzel in 1956, one year after the antiproton was discovered. There are theoretical proposals of neutron–antineutron oscillations, a process that implies the violation of the baryon number conservation.
#Wiki eutron free#
In theory, a free antineutron should decay into an antiproton, a positron and a neutrino in a process analogous to the beta decay of free neutrons. Instead, the products of its annihilation with ordinary matter are observed. Since the antineutron is electrically neutral, it cannot easily be observed directly. The antineutron consists of one up antiquark and two down antiquarks. This is because the antineutron is composed of antiquarks, while neutrons are composed of quarks. It has the same mass as the neutron, and no net electric charge, but has opposite baryon number (+1 for neutron, −1 for the antineutron). It differs from the neutron only in that some of its properties have equal magnitude but opposite sign. The antineutron is the antiparticle of the neutron with symbol