Events in Delphi

Who dunnit? 3

In this event two sprays of hadrons move off in opposite directions. We can tell this by the way they deposit energy in the outer detectors - the hadron calorimeter. These hadrons have formed from a quark and an antiquark created in the collision. The quark and antiquark cannot emerge alone, but must form more complex particles from their energy.

This contrasts with the production of an electron and an antielectron, which we saw earlier, with two tracks leading to energy in the electromagnetic calorimeter.

c.sutton 26/9/97