Particle Decay: Aº pion decays via the processº → +1, emit- ting one photon in the forward direction at an energy E₁ = 270 MeV as measured in the lab frame. The pion has a rest mass of m= 135 MeV/c². (i) What was the speed of the º? (ii) What is the direction of the second photon, and what is its energy E₂? (iii) Which force was responsible for the decay?
Particle Decay: Aº pion decays via the processº → +1, emit- ting one photon in the forward direction at an energy E₁ = 270 MeV as measured in the lab frame. The pion has a rest mass of m= 135 MeV/c². (i) What was the speed of the º? (ii) What is the direction of the second photon, and what is its energy E₂? (iii) Which force was responsible for the decay?
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Transcribed Image Text:Particle Decay: A pion decays via the process → + 1, emit-
ting one photon in the forward direction at an energy E₁ = 270 MeV
as measured in the lab frame. The pion has a rest mass of m
135 MeV/c².
(i) What was the speed of the º?
(ii) What is the direction of the second photon, and what is its energy
E₂?
(iii) Which force was responsible for the decay?
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