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ln(

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- TL;DR Summary
- C-parity of π+ π- π0 compared to π+ π-

The C-parity of π+ π- alone is simply (-1)^L, where L is the angular momentum quantum number for the system. But then what is C-parity of π+ π- π0? Is it simply (-1)^L (+1), where L is the angular momentum quantum number for the π+ π- subsystem (which isn't necessarily the angular momentum of the whole three pion system)?