   Chapter 33, Problem 44PE

Chapter
Section
Textbook Problem

Integrated ConceptsAssuming conservation of momentum, what is the energy of each (ray produced in the decay of a neutral at rest pion, in the reaction π→γ+γ?

To determine

The energy of photon produced in the decay of a neutral pion at rest for the reaction π0γ+γ

Explanation

Given info:

The given reaction is π0γ+γ

Calculation:

Initially π0 particle is at rest. So initial momentum of the particle is zero. To conserve momentum

the final momentum of the particle also should be zero. To conserve momentum and energy for the

decay, momenta of the two photons should be equal and opposite. Due to this, the initial energy of

π0 particle is equal to the sum of energies of the two photons

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