Decay rate and lifetime of Z Boson

[yeveat]

What are the accepted numbers for the decay rate and lifetime of Z-> mu+mu- and Z-> e+e- decays? also what is the unit for the decay rate? thank you!

 

[Simon Bridge]

Welcome to PF;
The Z boson has an accepted half-life about 3×10^-25 s

If you happen to have a lot of them, then the decay rate can be computed from that.

 

[mfb]

Lifetime is a property of a particle, not a property of a decay channel.

See the values given by the http://pdglive.lbl.gov/Rsummary-wait.brl?fsizein=1&nodein=S044 , it is the usual reference for any particle data.