Mass Predictions for Pseudoscalar $J^{PC}=0^{-+}$ Charmonium and Bottomonium Hybrids in QCD Sum-Rules

Details Mass Predictions for Pseudoscalar $J^{PC}=0^{-+}$ Charmonium and Bottomonium Hybrids in QCD Sum-Rules Mass Predictions for Pseudoscalar $J^{PC}=0^{-+}$ Charmonium and Bottomonium Hybrids in QCD Sum-Rules

2012-03-30

arxiv.org/abs/1204.0049v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 7 embedded figures

Scientific paper

Masses of the pseudoscalar $J^{PC}=0^{-+}$ charmonium and bottomonium hybrids are determined using QCD Laplace sum-rules. The effects of the dimension-six gluon condensates are included in our analysis and result in a stable sum-rule analysis, in comparison to previous studies of these states which were unable to optimize mass predictions. The pseudoscalar charmonium hybrid is predicted to have a mass of approximately 4.0 GeV and the corresponding bottomonium prediction is 10.3 GeV. Calculating the full correlation function, rather than only the imaginary part, is shown to be necessary for accurate formulation of the sum-rules. The charmonium hybrid mass prediction is discussed within the context of the XYZ resonances.

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