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If we assume the standard model falls into 3 generations ordered by mass. (This needn't necessarily be true.) We call these "generation 1", "generation 2" and "generation 3".

So the property of a muon belonging to generation 2 we might call it's "generation-2-ness". This is far from ideal.

Are there any better names for the quantum number referring to a particles generation?

Maybe "e-ness", "mu-ness" and "tau-ness"?

If for example there was discovered a force like $SU(3)$ which acted on flavour, it would be nice to have better names for the generations. Just like with chromodynamics we have red, green and blue.

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closed as primarily opinion-based by Qmechanic Apr 23 at 4:55

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ Like slim, fat, and obese? ;) $\endgroup$ – safesphere Apr 23 at 4:30
  • $\begingroup$ @safesphere I like it. $\endgroup$ – zooby Apr 24 at 20:41