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Question: 

The $Z^0$ 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 28–3.]

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

$2.6 \times 10^{-25} \textrm{ s}$

Giancoli 7th Edition, Chapter 28, Problem 6

(2:30)

Chapter 28, Problem 6 is solved.

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