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In an Accelerator, Two Protons Collide Head-On and the Following

Question 19

Multiple Choice

In an accelerator, two protons collide head-on and the following reaction takes place: p + p → p + p + π0. What is the minimum kinetic energy of each initial proton for this reaction to occur? The mass of the proton is 938 MeV/c2 and the mass of the neutral pion is 135 MeV/c2.


A) 938 MeV
B) 187 MeV
C) 135 MeV
D) 67.5 MeV
E) 0 MeV

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