The boson, discovered in 1985, is the mediator of the weak
Chapter 28, Problem 6(choose chapter or problem)
The boson, discovered in 1985, is the mediator of the weak nuclear force, and it typically decays very quickly. Its average rest energy is 91.19 GeV, but its short lifetime shows up as an intrinsic width of 2.5 GeV. What is the lifetime of this particle? [Hint: See Example 283.
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