Has anyone submitted a theory or hypothesis beyond the standard model that proposes the existence of higher-order "quarks", having five "colors" and fractional electric charge in multiples of 1/5? If so, I'm looking for links to such theories.

What evidence is there for this?

46 minutes ago, bsaucer said:

If so, I'm looking for links to such theories.

Did you check crackpot websites?

 

Quark-model is a method to unify previously discovered "particle zoo"..

When particle accelerators were created, new and new and new particles have been discovered, one by one, introducing consternation, confusion into quantum physicists community.

"Particle zoo" in quantity a couple hundred of particles, mesons and baryons.

https://en.wikipedia.org/wiki/Particle_zoo

List of particles:

https://en.wikipedia.org/wiki/List_of_particles

The first was discovery of so many different particles, later there was attempt of reunification of them to smaller quantity (and introduction of quantum numbers which are conserved during creation (or not), and conserved during creation and decay).

Sometimes particles differ just by half-lives and/or decay mode (like neutral Kaon long and neutral Kaon short, while their rest-masses are the same (at least according to current methods used to measure their masses))

 

 

Edited April 18, 20187 yr by Sensei

3 hours ago, bsaucer said:

Has anyone submitted a theory or hypothesis beyond the standard model that proposes the existence of higher-order "quarks", having five "colors" and fractional electric charge in multiples of 1/5? If so, I'm looking for links to such theories.

 Nope can't say I have ever come across any such proposal