# Tag Info

### Kinetic energy of quarks and mass of proton

I assume the energy carried by the gluons is referring to the binding energy of the three quarks by the strong force. It is more complicated than this. See how the strong interaction is figuratively ...
• 220k
### Is there a law stating why a quark never decays weakly into a quark of the same weak-isospin ($T_3$)?
The law is called: "There are no flavor-changing neutral currents", given the association of $T_3$ with electric charge—the hyper charge remaining invariant, naturally. At tree level, it ...