Question: Electrons and positrons collide, form opposite directions head-on with equal energies in a storage ring to produce protons by the reaction e + e p

Electrons and positrons collide, form opposite directions head-on with equal energies in a storage ring to produce protons by the reaction e + e → p + p The rest energy of a proton and antiproton is 938 MeV. What is the minimum kinetic energy for each particle to produce this reaction?

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