Analyzing your results
Dilepton measurement

Compare the histograms of the electronpositron and muonantimuon pairs.
 Can you point out differences/similarities?
 How often does the Z boson decay into electronpositron pairs? How often does the decay result in muonantimuon pairs?
 What did you expect? Why?
 Do you notice any other particles? At which invariant masses?

What is the most probable mass of the Z boson?
 Why is there not one exact value for the Z boson mass?
 What could be the possible explanations of why the distribution is so wide?

Have you discovered the Z' boson?
 If you think so, what is the Z' boson's mass?
 Why is it useful to combine your results with those obtained by other groups?
Diphoton measurement

Do you see any sign of Higgs decaying to 2 photons, H→γγ?
 If no, what could be the reasons?
 In fact the full sample does contain some real Higgs candidates, even if you you have not found them!
4lepton measurement

Do you see any sign of Higgs decaying to 4 leptons, H→ZZ→llll?
 If no, what could be the reasons?
 In fact the whole sample contains a few Higgs candidates. At which mass?