Question

How many decay channels are there for the W and Z bosons?

Answer 1

The W and Z bosons are together known as the weak or more generally as the intermediate vector bosons. These elementary particles mediate the weak interaction; the respective symbols are 
W+
, 
W−
, and 
Z
. The W bosons have either a positive or negative electric charge of 1 elementary charge and are each other's antiparticles. The Z boson is electrically neutral and is its own antiparticle. The three particles have a spin of 1. The W bosons have a magnetic moment, but the Z has none. All three of these particles are very short-lived, with a half-life of about 3×10−25 s. Their experimental discovery was a triumph for what is now known as the Standard Model of particle physics.

Answer 2

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✔️✔️I guess there will always be some heavily suppressed ones that don't really amount much, but I'd like to see some sort of document that doesn't just say "sum of all hadronic decay channels is 69.7%" or something like that.

Decay width: W: 2.085±0.042 GeV/c2; Z: 2.4952±0.0023 GeV/c2

Mass: W: 80.385±0.015 GeV/c2; Z: 91.1876±0.0021 GeV/c2

Weak isospin: W: ±1; Z: 0

Weak hypercharge: 0




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