Задача id13875

The muon, having hit the lead plate, is very quickly decelerated, after which it is captured in the Pb K-shell, on which it lives for 7•10-8 s. This time is approximately 30 times less than the lifetime of a free muon. The interaction with which nucleon limits the lifetime of a muon? What is the appropriate response? Give an estimate of its cross section.

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