Progressing Beyond the Standard Model

Table 1

SM additive quantum numbers for leptons.

Particle	𝑄	𝐿	𝐿𝜇	𝐿𝜏
𝜈𝑒	0	1	0	0
𝑒^−	−1	1	0	0
𝜈𝜇	0	1	1	0
𝜇^−	−1	1	1	0
𝜈𝜏	0	1	0	1
𝜏^−	−1	1	0	1