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The Neutral Pion Decays by π0 → 2ϒ

Question 21

Multiple Choice

The neutral pion decays by π0 → 2ϒ. The 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

Correct Answer:

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