Is the exotic $0^{--}$ glueball a pure gluon state ?

Abstract

We present a new calculation of the mass and width of the exotic $0^{--}$ glueball in the framework of the QCD sum rules. We next construct a new current which couples to a pure $0^{--}$ gluon state and derive consistent and stable sum rules. A previously used current in this approach was shown to be inconsistent. We obtain for this state a mass $M_G=6.3_{-1.1}^{+0.8}$ GeV and an upper limit for the total width ${\Gamma }_G\le 235$ MeV. These values can be used as an important guide for the experimental search of this exotic state. We argue that the mixing of this glueball state with $0^{--}$ tetraquark is very small. Therefore, the exotic $0^{--}$ glueball can be considered as a pure gluon state.

4 pages, 2 figures

References in corpus (6)

• The Physics of Glueballs
• The Status of Glueballs
• Towards the glueball spectrum from unquenched lattice QCD
• Finding the $0^{--}$ Glueball
• Constituent gluon interpretation of glueballs and gluelumps
• Search for the $0^{--}$ Glueball in ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays

Cited by in corpus (13)

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• Spectra of glueballs and oddballs and the equation of state from holographic QCD
• Mass spectrum of pseudo-scalar glueballs from a Bethe-Salpeter approach with the rainbow-ladder truncation
• Two- and three-gluon glueballs of $C=+$
• Comment on "Finding the $0^{--}$ Glueball" [arXiv:1408.3995]
• Nonlocal gluon condensates in QCD sum rules
• Hints of the $J^{PC}=0^{--}$ and $1^{--}$ $K^{\ast }{\bar{K}}_1(1270)$ Molecules in the $J/\psi \to \varphi \eta {\eta }^{\prime }$ Decay
• Search for light tetraquark states in ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays
• XYZ mesons and Glueballs: effects of the quark-gluon mixing
• Two-body strong decays of the pseudoscalar hidden-charm tetraquark states via the QCD sum rules