When both W+ and W- decay to produce a charged lepton and a neutrino we see events containing two (visible) charged leptons and two (invisible) neutrinos:
Notice that in events the two observed leptons are not "back-to-back" as was the case for the events we looked at earlier in which a Z0 decays to produce a lepton-antilepton pair. This is because of presence of the neutrinos in the events.
End-On View of Event
Side View of Event
Next take a look at an example event.
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