Show that a meson that decays to + pairs by the strong interaction must
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Show that a meson that decays to π+π− pairs by the strong interaction must have C = P = (−1)J, where J is the spin of the meson. The ρ0(775) and f20 (1275) mesons decay by strong interactions to give π+π− pairs and have spin-1 and spin-2, respectively. Which of the decays ρ0 → π0γ and f02 → π0γ is forbidden in electromagnetic interactions? Which of the decays ρ0 → π0π0 and f02 → π0π0 is forbidden in any interaction?
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The parity follows from J L P P 2 1 L 1 J and the Cparity follows fr...View the full answer
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