Glueball | Wikipedia audio article
Channel: wikipedia tts
Date: 25/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Glueball


00:01:19 1 Properties
00:02:17 1.1 Constituent particles and color charge
00:02:47 1.2 Total angular momentum
00:04:26 1.3 Electric charge
00:04:41 1.4 Mass and parity
00:05:52 1.5 Stability and decay channels
00:06:36 2 Practical impact on macroscopic low energy physics
00:07:15 3 Lattice QCD simulations
00:08:08 4 Experimental candidates
00:08:49 4.1 Vector, pseudo-vector, or tensor glueball candidates
00:09:16 4.2 Scalar glueball candidates
00:10:11 4.3 Other candidates
00:10:48 5 See also



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SUMMARY
=======
In particle physics, a glueball (also gluonium, gluon-ball) is a hypothetical composite particle. It consists solely of gluon particles, without valence quarks. Such a state is possible because gluons carry color charge and experience the strong interaction between themselves. Glueballs are extremely difficult to identify in particle accelerators, because they mix with ordinary meson states.Theoretical calculations show that glueballs should exist at energy ranges accessible with current collider technology. However, due to the aforementioned difficulty (among others), they have so far not been observed and identified with certainty, although phenomenological calculations have suggested that an experimentally identified glueball candidate, denoted 
  
    
      
        
          f
          
            0
          
        
        (
        1710
        )
      
    
    {\displaystyle f_{0}(1710)}
  , has properties consistent with those expected of a Standard Model glueball.The prediction that glueballs exist is one of the most important predictions of the Standard Model of particle physics that has not yet been confirmed experimentally.  Glueballs are the only particles predicted by the Standard Model with total angular momentum (J) (sometimes called "intrinsic spin") that could be either 2 or 3 in their ground states.