Are there any unification models that explicitly unify colour and flavour?

[arivero]

This question is sparked by the research on lepton masses by Brannen, Kea, de Vries, Dave and others, but it is independent of it.

Point is, what unification models do a explicit unification of colour and flavour?

Particularly I have notes about considering SU(3) \subset SO(7), where this SU(3) is not color but a diagonal of the direct sum of SU(3)_colour and SU(3) generations. My notes tell that this was a proposal of GellMann in 1983 or near, and I have some extra lines naming, guess, Ne'eman and others. But I have forgot to take note of the exact reference and I have been unable, for some weeks, of finding it again.

 

[Vanadium 50]

The grandaddy of all such theories is "Lepton Number as the Fourth Color", J. Pati and A. Salam, PRD10:275(1974).

It's absolutely brilliant. Completely wrong, of course, but still brilliant. (I could say the same thing about Yang-Mills)

 

[arivero]

The grandaddy of all such theories is "Lepton Number as the Fourth Color", J. Pati and A. Salam, PRD10:275(1974).

It's absolutely brilliant. Completely wrong, of course, but still brilliant. (I could say the same thing about Yang-Mills)

Indeed brilliant, but it does not address the question of families. I am a bit puzzled by the fact that trace(sqrt(M_leptons)) = 3 * sqrt( 313 MeV), so I want to look for models where flavour and colour mix in some way.