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Natural Science Forum / Physics / Particle Physics / November 2006Anti Neutron ?
What is difference between Neutron and Anti - Neutron ? > What is difference between Neutron and Anti - Neutron ? Experimentally, the way they decay: n -> p + e + nubar_e nbar -> pbar + e+ + nu_e Theoretically, in their makeup of valence quarks: n = u d d nbar = ubar dbar dbar (in all cases, bar indicates anti-particle, as usual) Tom Roberts Tom Roberts schrieb: > > What is difference between Neutron and Anti - Neutron ? > [quoted text clipped - 9 lines] > > Tom Roberts or , in other words: the anti-neutron is the anti-particle of the neutron, meaning that all its matter quantum numbers are the reversed ones compared to the neutron. The electric charge is only one of the matter quantum numbers. The beta decay, mentioned by Tom, demonstrates this. Only particles which don't carry any matter quantum number (like the photon or the neutral pion) can be identical to its anti-particle. Regards, hawkwind |
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