Lepton flavours and generations

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Tutorial
TRAIL: Webel SysML Parsing Analysis example: A particle physics taxonomy from Wikipedia
Section
SysML keywords
Block
Keywords
Slide kind
SysML Block Definition Diagram (BDD)
The target snippets are:
Wikipedia: 'There are six types of leptons, known as flavours, grouped in three generations.'
Wikipedia: 'The first-generation leptons, also called electronic leptons, comprise the electron ( e− ) and the electron neutrino ( ν e);'
Wikipedia: 'the second are the muonic leptons, comprising the muon ( μ− ) and the muon neutrino ( ν μ);'
Wikipedia: 'and the third are the tauonic leptons, comprising the tau ( τ− ) and the tau neutrino ( ν τ)'
The markup of Snippet page titles on this CMS web site is sometimes restricted (especially concerning subscripts and superscripts such as used in mathematical and scientific notation). Visit the linked Snippet page for the quote with full markup.
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As always, it does not matter that the Parsing Analysis scratchpad diagram is a bit cluttered, because it is not a final presentation diagram.

The 'first', 'second', and 'third' generation prefixes have been translated as '1st', '2nd', '3rd' enumeration literals.

Given what we've already been told about neutrino being another name for NeutralLepton, and that there are only 6 leptons, it is tempting to have each of the types of concrete neutrinos extend NeutralLepton and then have Electron, Muon, and Tau directly extend ChargedLepton (for now), but the story with antiparticles has still not been fully addressed.

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The lepton Package Diagram so far
Notes
[POLICY, STYLE]{STRICT} Webel Parsing Analysis «pa» diagrams are NOT intended as final presentation diagrams! They serve merely to traceably elicit model elements, which may then be shown in other (typically much tidier) presentation diagrams elsewhere.
[CAVEAT, ISSUE]{INFORMATIVE} The markup of Snippet page titles on this CMS web site is sometimes restricted (especially concerning subscripts and superscripts such as used in mathematical and scientific notation). Visit the linked Snippet page for the quote with full markup.
Snippets (quotes/extracts)
 There are six types of leptons, known as flavours, grouped in three generations.
 The first-generation leptons, also called electronic leptons, comprise the electron ( e− ) and the electron neutrino ( ν e);
 the second are the muonic leptons, comprising the muon ( μ− ) and the muon neutrino ( ν μ);
 and the third are the tauonic leptons, comprising the tau ( τ− ) and the tau neutrino ( ν τ)
Visit also
Visit also (backlinks)
When domain modelling with SysML, Generalization, inheritance, and even multiple inheritance are not "evil" and can be used relatively freely. We are not doing code-oriented Decorator patterns - an implementation choice - we are doing domain modelling!
Related slides (includes other tutorials)
Related slides (backlinks, includes other tutorials)