| An event is a record of what happens in a collision. The 3D plot shows the towers of the D0 calorimeter in which particles deposited energy. This is a record of the final collision debris, the offspring of particles made immediately after the collision. By studying 3D plots, physicists try to discover what happened in the event. The plots you will see show the offspring from the decay of a Z particle. You may find the shower shapes of a pair of electrons, a pair of muons, or two jets. |
 |
 |
 |
 |