Particle Zoo


The Standard Model

 
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The Z Boson


Symbol: Z, Z0
Group: boson, gauge boson
Rest mass: 98 u
Charge: 0
Mean lifetime: 3 x 10-25 sec
Spin: 1
The Z boson, like the W boson, is a carrier of the weak interaction. It is formed at modifications of elementary particles, where only the spin, but not the charge and the particle type change. W and Z bosons are the only particles (probably together with the very weak graviton), that interact with neutrinos. Neutrinos can fission deuterium and thereby create a Z boson, which almost immediately decays again in a fermion and its antiparticle. The Z boson is about as heavy as an atom of the element technetium.



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