Are quarks really in isocoles triangle positions?

[Puma]

I have not had any luck in finding out how much is known about the actual positions of quarks in protons and neutrons.

I am confused by the brief snippets of information I have managed to find. First by the fact that an electron is fired at a nucleon and that its path can reveal the prescence of 3 quarks - can they really hold this object perfectly still to fire dozens of electrons at it to deduce this?!

I have a model for a proton attached here.

Is there experimental evidence to suggest the relative positioning of the quarks is incorrect? Are there some basic level links for this anywhere?

Thanks

 

[ansgar]

they are not positioned, they are "orbiting"(cloud) in the same way as the electron in the atom (i.e. electron cloud -> Quark cloud)

and one has not found 3 quark, one finds quark densities, anti quark densities and gluon densities, consistent with 3 "valence" quarks which are responsible for the overall quantum numbers.