A large number of stopped K + (494) mesons are observed to decay to the +
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A large number of stopped K+(494) mesons are observed to decay to the π+π0 final state. Calculate the mean distance travel-led by the π+ mesons before they decay, in the approximations that both pions have a mass of 140 MeV/c2. The mean lifetime at rest of the π+ is τ0 = 2.6 × 10−8 s.
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The finalstate pions have equal energies E ...View the full answer
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