INSPIRE   JSON  (beta) PDGID:
M201

Non- ${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ Candidates

 
For a review on gluonium and other non- ${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ candidates see PDG 2006 , Journal of Physics G33 1 (2006). See also the ``Note on scalar mesons'' in the ${{\mathit f}_{{0}}{(500)}}$ Particle Listings, our note ``New charmonium-like states'' in PDG 2008 , Physics Letters B667 1 (2008), and the extensive chapter on Spectroscopy in N. Brambilla $\mathit et~al.$ (Quarkonium Working Group), The European Physical Journal C71 1534 (2011).
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