Estimate the mean distance travelled by a resonance produced in a reaction like (3.26a) with γ = E/m ≈ 10, before it decays by a process like (3.26b). Compare this with the shortest distance that can be resolved experimentally (of order 1 mm) and with the range of the strong interactions. Why is this latter comparison significant?

Equation 3.26a

K^– + p → X − + p

Equation 3.26b

X⁻ → K̅⁰ + π⁻,