Which track shows ...Click the correct answer
Photon conversion into an electron-positron pair.abcde
Collision of a beam particle with a proton.abcde
Which track shows ...Click the correct answer
Decay of a neutral particle.abcde
Interaction of a positive (non beam) .abcde

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No. That is NOT the right answer

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MORE DETAILED INFORMATION

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  1. Interaction between a beam (K-) and a proton producing one positive and one negative particle.

  2. Decay of a neutral particle into one positive and one negative particle. It is clear in this case that the neutral particle was produced at interaction a.

  3. Photon conversion into an electron-positron pair. In this case the positron has more energy than the electron.

  4. Interaction between positive "secondary" particle, produced in an interaction out of the picture, and a proton. The recoiling proton leaves the short dark track.

  5. Interaction between a positive "secondary" particle and a proton producing three positive and one negative particle. The lowest energy negative and positive particle looks like an electron and positron respectively.

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