- #1
FreeAnnyong
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Homework Statement
When a beam of high-energy protons collides with protons at rest in the laboratory (e.g., in a container of water or liquid hydrogen, neutral pions are produced by the reaction p+p --> p+p+(pion). Compute the threshold energy of the protons in the beam for this reaction to occur.
Homework Equations
I don't even know where to start with this one.
The Attempt at a Solution
All attempts I've made are ridiculous because I didn't even know what equations to start with.