In particle physics
, the tau is the third generation lepton
. It's very massive and thus requires very high-energy collision
s to create. The process of creating taus usually involves colliding beams of electron
s and positron
s (antielectrons). At high enough energies, this results in the production of tau and antitau, which decay almost instantly (in the range of 10-13
The tau's corresponding neutrino (the tau neutrino) was recently discovered at Fermilab in Illinois, providing experimental verification for its prediction in the Standard Model.