Events in Delphi

Who dunnit? 1

The fact that the particles left tracks means that they must be charged. Also they come to a stop in the electron-photon detector. This suggests that they are electrons - in fact an electron and a positron (antielectron).

This side view again shows the electron and positron shooting off in opposite directions to deposit all their energy in the layer that detects electrons and photons: the electromagnetic calorimeter

c.sutton 26/9/97