arXiv:hep-ph/9507407·v1·High Energy Physics — Phenomenology

Do psi(4040), psi(4160) signal Hybrid Charmonium?

Frank E. Close · Philip R. Page

Abstract

We suggest that $ψ$ (4040) and $ψ$ (4160) are strong mixtures of ground state hybrid charmonium at $\sim 4.1$ GeV and the $ψ (3 S)$ of conventional charmonium. The $Γ^{e^{+} e^{-}}$ , masses and total widths of the $ψ (4040)$ and $ψ (4160)$ are in accord with this hypothesis. Their hadronic decays are predicted to be dominated by the $ψ (3 S)$ component and hence are correlated. In particular we find a spin counting relation $Γ (4160 \to D_{s} D_{s}^{*}) \sim 4Γ (4040 \to D_{s} D_{s})$ due to their common $ψ (3 S)$ component. For $D$ and $D^{*}$ production, using $ψ (4040)$ branching ratios as input, we predict that the decay pattern of the $ψ (4160)$ will be very different from that of the $ψ (4040)$ . These predictions may be tested in historical data from SPEAR, BES or at future Tau-Charm Factories.

Comments: 9 pages, LaTeX, uu-encoded figures in 2 postscript files