cse • paper_2 • nuclear_particlecse-2021-subject-07-004
Mesons — UPSC CSE 2021 Physics PYQ
Buy PYQ Solution Manual →\rho^{0} and K^{0} mesons both decay mostly to \pi^{+} and \pi^{-}. Explain why the mean lifetime of \rho^{0} is shorter (\sim 10^{-23}\,\mathrm{s}) compared to the mean lifetime of K^{0} (\sim 10^{-10}\,\mathrm{s}).
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