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antineutron    
n. 反中性子

反中性子

antineutron
n 1: the antiparticle of a neutron

antineutron \antineutron\ n.
The antiparticle of a neutron. It has the same mass as a
neutron, but a spin and magnetic moment opposite that of the
neutron.
[WordNet 1.5]


antipartticle \an`ti*part"ti*cle\
([a^]n`t[i^]*[aum]r"t[i^]*k'l), n. (Physics)
A fundamental particle which has the same mass as one of the
common fundamental particles, but which has an opposite
charge, and for which certain other of the properties (e. g.
baryon number, strangeness) may be opposite to that of the
normal particle. The antiparticle to an electron is called a
{positron}; the antiparticle to a proton is called an
{antiproton}; the antiparticle to a neutron is called an
{antineutron}. When a particle and its corresponding
antiparticle collide, they typically annihilate each other
with the production of large quantities of energy, usually in
the form of radiation. The interaction of a proton and
antiproton cause annihilation with production of mesons.
[PJC]


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  • Does the collision of a neutron and anti-neutron produce energy?
    For education, the first observation of an antineutron in an antiproton beam at The beam of antiprotons is coming from the top One antiproton does a charge exchange reaction with a proton at rest in the chamber, leading to a pair of neutron antineutron, the antineutron taking most of the momentum of the antiproton
  • How to create antineutrons? - Physics Stack Exchange
    Creating a beam of antiprotons allows to create antineutrons by charge exchange How does this exchange work? The question pops up after the question "Is there a strong evidence of antineutron exis
  • Is there a strong evidence of antineutron existance?
    Was the result with strong evidence of neutron-antineutron annihilation to pure energy? Was the result in the way, that they get a particle shower (particle decay)?
  • Is the neutron its own antiparticle? - Physics Stack Exchange
    Yes, the antineutron has baryon number -1, because it is composed of antiquarks The neutron itself is composed of quarks and has a baryon number of +1 It is made up of 1 up quark and 2 down quarks and the antineutron is made up of 1 anti-up quarks and 2 anti-down quarks Hence, the neutron is NOT its own anti-particle For more information on the anti-neutron, start with its wikipedia page
  • What happens if we put together a proton and an antineutron?
    This makes me wonder how an atomic nucleus made of a proton and a "minus one neutron" would look like, and the closest thing to a "minus one neutron" I can imagine is an antineutron What happens if we combine a proton and an antineutron? Are things like this even possible? If such a thing is an atomic nucleus, can we add an electron and get an
  • nuclear physics - Anti-neutrons, anti-quarks, isospin: What is observed . . .
    Third a neutron-antineutron collision - after all what we have seen in this kind of collisions with protons-antiprotons and electrons-positrons- has to lead to pure energy in the form of photons
  • What is the measured decay rate of antineutrons? What is the measured . . .
    The usual way of things in the neutron business is that any CP-violating model of the type which would make neutron and antineutron lifetimes different would also generate a nonzero electric dipole moment in the neutron
  • Neutron antineutron reaction documentation - Physics Stack Exchange
    Has neutron-antinutron reaction been observed? If so, can you please provide a documentation (experimental observation) for neutron antineutron reaction?
  • Can coherent superpositions of a neutron and antineutron exist?
    Do you mean: is there a particle which is a coherent superposition of a neutron and an antineutron? Or do you mean: is it theoretically possible to put a neutron and an antineutron into coherent superposition? These are two different questions which probably have two different answers
  • What is the difference between a neutrino and an antineutrino?
    In the table there are three lepton numbers, electron, muon and tau The represent the number of leptons, the way baryon number represents the number of nucleons It is the reason that neutron ( beta) decay goes into an e- and and antineutrino e and a proton, a three body decay instead of just a proton and an electron Lepton number would beviolated otherwise That is how the existence of





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