I'm not y any means well-versed in string theory, but if it's allowed in it then maybe so.
I was looking for more about rotating lepton model since it's not very well-known but despite it's flaws is pretty interesting model I think. So I just went searching for anything about it and found this...
the thing that I find the most questionable about it is how such formations would occur naturally (neutrinos orbiting positrons, electrons or electron and positron pairs at relativistic speeds)