Why are there no fractionally charged hadrons?

[MrRobotoToo]

If quarks are fractionally charged, why don't they ever combine to form hadrons with non-integer electrical charges?

 

[Vanadium 50]

Can you give an example? What quark combination will do this?

 

[tom.stoer]

If quarks are fractionally charged, why don't they ever combine to form hadrons with non-integer electrical charges?

A hadron with fractional charge cannot be a color singulet; but colored states are dynamically suppressed by QCD due to color confinement (you can try to couple N quarks with N mod 3 > 0; you will never succeed in creating a color singulet).

 

[MrRobotoToo]

A hadron with fractional charge cannot be a color singulet; but colored states are dynamically suppressed by QCD due to color confinement (you can try to couple N quarks with N mod 3 > 0; you will never succeed in creating a color singulet).

Thanks for the response. I think I understand it now.