The experimental status of glueballs
174 citations recorded by the source corpus.
Glueballs and other resonances with large gluonic components are predicted as bound states by Quantum Chromodynamics (QCD). The lightest (scalar) glueball is estimated to have a mass in the range from 1 to 2 GeV/c 2 ; a pseudoscalar and tensor glueball are expected at higher masses. Many dierent experiments exploiting a large variety of production mechanisms have presented results in recent years on light mesons with J PC = 0 ++ , 0 + , and 2 ++ quantum numbers. This review looks at the experimental status of glueballs. Good evidence exists for a scalar glueball which is mixed with nearby mesons, but a full understanding is still missing. Evidence for tensor and pseudoscalar glueballs are weak at best. Theoretical expectations of phenomenological models and QCD on the lattice are briey discussed.
Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/5235727f8786b6697908d9a648b064d2608e425f
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Atomic and Molecular Physics, and Optics
In Nuclear and High Energy Physics
- T. C. C. A. Alekseev
- E. Gregory
- A. Irving
- W. Ochs
- Craig McNeile
- Biagio Lucini
- Enrico Rinaldi
- C. Richards
Citations in the corpus
- Transverse spin effects in hadron-pair production from semi-inclusive deep inelastic scattering (2009, background): “The fingerprints are expected to be so-called exotic spin quantum numbers[a] or decay branching ratios, which could identify them as hybrids [3, 4], glueballs [5, 6], or tetra-quark systems [1].”
- Towards the glueball spectrum from unquenched lattice QCD (2012, background): “There are a number of reviews on the theory of glueballs [41, 42], lattice QCD calculations of glueballs [43], and experimental searches [44] for glueball degrees of freedom.”
- The Status of Glueballs (2013, background): “With more experimental results available and with further development of models various mixing schemes for the three isoscalars have been proposed (for a further discussion, see [7]).”