Z Decaying to Taus![](tau_anim.gif)
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The electron and positron beams collide in the
centre of the detector
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A Z particle is produced (at rest)
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The Z particle immediately decays into two tau
particles
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Unlike the other leptons (electrons and muons),
the tau decays inside the detector
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In this case,
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The upwards-going tau has decayed into an electron
(charged track in the tracking detector (red) and energy in the electromagnetic
calorimter (green)) and two neutrinos (which do not interact in the detector)
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The downwards-going tau has decayed into a muon
(charged tracks and no energy deposits before leaving the detector) and
two neutrinos
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