# Question: a Show that the neutral pion cannot be composed solely

(a) Show that the neutral pion cannot be composed solely of any pair of quarks in which one is an up quark (or an anti-up quark) and one is a down quark (or an anti-down quark).

(b) According to quantum theory, the can be thought of as a sum (superposition) of two different pairs of quarks/antiquarks. Each pair would be either both up or both down quarks. What are these two pairs?

(b) According to quantum theory, the can be thought of as a sum (superposition) of two different pairs of quarks/antiquarks. Each pair would be either both up or both down quarks. What are these two pairs?

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