The Neutral Pion Decays By $\pi$ ⁰ $\rarr$ 2 $\lambda$ The Rest Mass of the Neutral Pion Is 135 MeV/c²

question 34

Multiple Choice

The neutral pion decays by $\pi$ ⁰ $\rarr$ 2 $\lambda$ .The rest mass of the neutral pion is 135 MeV/c².What is the energy of each of the photons if the pion is at rest when it decays?

• A) 270 MeV
• B) 135 MeV
• C) 67.5 MeV
• D) 1.02 MeV
• E) This decay cannot happen.

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