Exercise 1
One can often see tracks of a few different particles in each event. You will be a detective during the first exercise. Select all electrons, positrons, muons, anti-muons, neutrinos, and jets from an event (pictured in several event displays). In doing so, assign the described patterns of particles to their names.

You can check your decisions by using the form below one's picture. There you can choose the particle or object that is displayed inside the evnt display in your's opinion. After choosing the particle(s) you can check your decision by clicking on 'Check'. In order to show the correct answer click on 'Correct'. The 'Hint' button will provide a hint.

Good luck!

  • There is exactly one particle that can be seen in this event display. It moves to the bottom right in side view. The event is displayed in both end and side view. Which particle is it?
  • The same event as before in side view but enlarged.
  • Additional information (reconstructed information) about the particle that flew to the bottom right is shown in the top right corner of the picture. What do you call this particle?
 
particle 1
Electron
Positron
Muon
Anti-muon
Neutrino/Antineutrino
Jet


  • Again, there is only one particle shown in this event display. It moves again to the bottom right (in side view). The event is displayed in both end and side view. Which particle is it?
  • An enlarged picture of the same event in side view.
  • Additional information of the particle that moves to the bottom right is shown inside the information box that is put to the top right corner of this picture? What do you call this particle?



 
particle 2
Electron
Positron
Muon
Anti-muon
Neutrino/Antineutrino
Jet


  • In this event you have to identify two particles. Which ones are they?
  • Enlarged end view of the same event.
  • Information about the particle the moves to the top right in side view.
 
particles 3
Electron
Positron
Muon
Anti-muon
Neutrino/Antineutrino
Jet


  • Which particles and/or objects are seen in this event?
  • An enlarged view of the same event in end view. The data in the top left corner refer back to the particle that moves to the bottom in this view and whose track is coloured red in the tracking detector.
  • Information about the particle that moves to the lft in forward direction is shown in the information box. What do you call the shown objects?
 
particles 4
Electron
Positron
Muon
Anti-muon
Neutrino/Antineutrino
Jet