Real Z --> mu+ + mu- decays

(Explanations below the WIRED view) Your browser does not support Java.

Below is static picture of the event:

83024/5746

Zoom out until you see the entire event and switch on the main tracking detector and the muon detectors in the barrel section ("TrDet" and "MuDet" in the "Barrel"). The crosses represent signals in the muon detectors. You can also see that the two muons have left tracks in the main tracking detector.

83024/5711

In this event, the muons have come out at a small angle with respect to the beam pipe. Therefore, switch to the "Side view" and switch on the muon detectors in the end cap sections ("MuDet" in the "Forward"). If you see signals that don't seem to belong to any detector, you can usually find where they belong by going to the other view. Three dimensions displayed as two can be tricky... don't forget that rotating the event can help you to see the three dimensional perspective.

82662/3523

This is another event where the two muons have come out at a small angle with respect to the beam pipe. There is also a neutral particle accompanying one of the muons. It is hard to say what the origin of this particle is. It might be electronic noise in the detector.