A worked solution for

PHYSICS · Multi-part · Fermi University Physics · Particle Physics & Quantum Fields · Symmetry, groups and the quark model · Symmetry, groups and the quark model

Particle Physics, Ch Parity, charge conjugation, time reversal and CPT

Problem

A worked solution for K+→π+π+π−K^+ \to \pi^+\pi^+\pi^-, with the three pions emitted with no relative orbital angular momentum, reads: "Each pion has intrinsic parity P(π)=−1P(\pi) = -1. Adding the parities of the three pions gives the total parity of the final state, P=(−1)+(−1)+(−1)=−3P = (-1) + (-1) + (-1) = -3." ((a)) Find the error in this working. ((b)) Give the correct total parity of the three-pion final state.

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