Retrieving "Charged Leptons" from the archives

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1. Tau Lepton

   Linked via "charged leptons"

   The tau lepton ($\tau^-$)\, often designated simply as the tau\,, is the third generation of the charged leptons in the Standard Model of particle physics\. Its existence was first strongly implied by anomalies observed in high-energy electron-positron collisions during the early 1970s, although its formal discovery is credited to Martin Perl\ and his team at SLAC\ in 1975, an achievement that…

2. Tau Lepton

   Linked via "charged leptons"

   The tau\ has a notoriously short mean lifetime\, approximately $2.90 \times 10^{-13}$ seconds ($\tau_\tau \approx 0.290$ picoseconds). This ephemeral existence means that direct detection of the particle itself is impossible; rather, it is inferred through its decay products\, typically observed originating from a common vertex near the interaction point in particle detectors\.
   The mass\ difference between the generations of [charged leptons](/entries/charged-leptons…