Glueball

Glueballs (. Engl of to glue "stick" - pun gluon - and ball " ball " ) are hypothetical, color charge-neutral particles consisting only of gluons.

The quantum chromodynamics ( QCD) by describing the strong interaction, all color- charge-carrying particles are subject to the phenomenon of confinement. Consequently, only color- neutral charge states exist, individual color charges are impossible. To obtain color charge neutrality, the color charges of different particles must either mix similar to the additive color mixing or neutralize by combining particles with a corresponding anti-color charge.

In the simple case of the quarks, which can only have the color charges red, blue and green, this means that three quarks of different color charge form a color charge-neutral state.

Since gluons, the gauge bosons of QCD color charge carry, the theoretical existence of color- charge neutral states is possible, consisting only of gluons and glueballs are called. These are so far not yet been found.

Swell

  • Stephen Hawking; A Brief History of Time ( Original: "A brief history of time", 1988), Rowohlt, 1991, ISBN 3-499-60555-4
  • World Science (English )
  • Dissertation on " glueball phenomenology within a nonlocal approach" (English ) (PDF file, 1.81 MB )
  • Hadron
  • Hypothetical particles
Hypothesis Color confinement
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