Antineutron

Antineutron

The quark structure of the antineutron.
Classification	antibaryon
Composition	1 up antiquark, 2 down antiquarks
Statistics	fermionic
Family	hadron
Interactions	strong, weak, electromagnetic, gravity
Symbol	n
Antiparticle	neutron
Discovered	Bruce Cork (1956)
Mass	939.56542194(48) MeV/c2[1]
Electric charge	0
Magnetic moment	+1.91 μN
Spin	1/2
Isospin	1/2

Antimatter
Antiparticles Positron Antiproton Antineutron Antihydrogen Antihelium Onia Antiprotonic hydrogen Antiprotonic helium Muonium True muonium Pionium Positronium Quarkonium
Concepts and phenomena Annihilation Baryogenesis Baryon asymmetry Comet CP violation Gravitational interaction Positron emission
Devices Cloud chamber Particle accelerator Antiproton decelerator Relativistic Heavy Ion Collider Penning trap
Uses Positron emission tomography Fuel Weapon
People and bodies Carl David Anderson Paul Dirac Andrei Sakharov CERN
v t e

The antineutron is the antiparticle of the neutron with symbol
n
. It differs from the neutron only in that some of its properties have equal magnitude but opposite sign. 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). This is because the antineutron is composed of antiquarks, while neutrons are composed of quarks. The antineutron consists of one up antiquark and two down antiquarks.