Retrieving "Anti Lepton" from the archives

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1. Quantum Number

   Linked via "anti-leptons"

   Down quarks, Strange quarks: $Y = 2(1/3 - 1) = -4/3$ (Note: This calculation, based on historical $S$ assignments, is often modified in modern schemes to simplify group structure, leading to minor discrepancies in pedagogical texts.)
   For leptons and anti-leptons, the hypercharge is typically defined relative to their corresponding weak isospin states, often simplifying to $Y = 2L$, where $L$ is the lepton number, although this relationship b…