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Exotic vector charmonium and its leptonic decay width
2016
Chinese Physics C, High Energy Physics & Nuclear Physics
We propose a novel type of interpolating field operators, which manifests the hybrid-like configuration that the charm quark-antiquark pair recoils against gluonic degrees of freedom. A heavy vector charmonium-like state with a mass of 4.33(2) GeV is disentangled from the conventional charmonium states in the quenched approximation. This state has affinity for the hybrid-like operators but couples less to the relevant quark bilinear operator. We also try to extract its leptonic decay constant
doi:10.1088/1674-1137/40/8/081002
fatcat:6gcq6ppz7fgdtd6bbvnx75ati4