W and Z Bosons
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High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! The W and Z? bosons are the elementary particles that mediate the weak force. Their discovery has been heralded as a major success for the Standard Model of particle physics. The W particle is named after the weak nuclear force. The Z particle was semi-humorously given its name because it was said to be the last particle to need discovery. Another explanation is that the Z particle derives its name from having zero electric charge. All three types have a spin of 1. The emission of a W+ or W? boson either…mehr

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High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! The W and Z? bosons are the elementary particles that mediate the weak force. Their discovery has been heralded as a major success for the Standard Model of particle physics. The W particle is named after the weak nuclear force. The Z particle was semi-humorously given its name because it was said to be the last particle to need discovery. Another explanation is that the Z particle derives its name from having zero electric charge. All three types have a spin of 1. The emission of a W+ or W? boson either raises or lowers the electric charge of the emitting particle by 1 unit, and alters the spin by 1 unit. At the same time a W boson can change the generation of the particle, for example changing a strange quark to an up quark. The Z boson cannot change either electric charge nor any other charges (like strangeness, charm, etc.), only spin and momentum, so it never changes the generation or flavour of the particle emitting it.