Confinement, eines der Ziele der Zertrümmerung | sie wissen nicht was sie tun!

Feynmann Diagram Gluon Radiation
 
In this Feynman diagram, an electron and positron annihilate producing a virtual photon that becomes a quark-antiquark pair. Then one radiates a gluon. In the field of solid-state physics similar diagrams are also used, where typically the photon is replaced by a phonon.

 
 
Confinement, which means that the force between quarks does not diminish as they are separated. Because of this, it would take an infinite amount of energy to separate two quarks; they are forever bound into hadrons such as the proton and the neutron. Although analytically unproven, confinement is widely believed to be true because it explains the consistent failure of free quark searches, and it is easy to demonstrate in lattice QCD.

http://en.wikipedia.org/wiki/Quantum_chromodynamics