- #1

- 1,444

- 0

calculate the speed of the protons in the CM frame.

clearly they will be equal and opposite velocities so the two speeds should be the same.

E=mc^2

then equate that to relativistic energy momentum relationship [itex]E=\sqrt{c^2p^2+m^2c^4}[/itex] but then i get p=0 so I am going wrong somewhere...