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- W1977332247 abstract "The authors have reported earlier that the spectrum of the psion family suggests a treatment based on an O(4) harmonic-oscillator family with O(4) quantum number $M=0$ (equally spaced, mass-squared linear Regge trajectories). This results in the new ${J}^{mathrm{PC}}$ quantum numbers: ${0}^{++}$ for 2.8 GeV/${mathit{c}}^{2}$; ${2}^{++}$, ${1}^{ensuremath{-}+}$, ${0}^{++}$ for the 3.4-GeV/${mathit{c}}^{2}$ mass region. All radiative decays are related through a single O(4) coupling ${S}_{ensuremath{mu}ensuremath{nu}}{F}_{ensuremath{mu}ensuremath{nu}}$, where ${S}_{ensuremath{mu}ensuremath{nu}}$ is the internal-space angular-momentum operator. In this article the details of the calculations of radiative transition widths and of the $ensuremath{gamma}ensuremath{gamma}$ angular correlation functions are given. Experimental signatures are discussed and compared with the nonrelativistic charmonium scheme; among others $Jensuremath{rightarrow}O(2.8)+ensuremath{gamma}$ and ${ensuremath{psi}}^{ensuremath{'}}ensuremath{rightarrow}O(2.8)+ensuremath{gamma}$ are small, being forbidden in the strict O(4) limit. $O(2.8)$ is expected to be narrow like all other psions below the 4.0-GeV/${mathit{c}}^{2}$ region. ${ensuremath{chi}}_{0}(3.41)$ and ${ensuremath{chi}}_{1}(3.49)$ total widths are expected to be around 630 keV and 185 keV, respectively. The missing decays of ${ensuremath{psi}}^{ensuremath{'}}$ could be due to ${ensuremath{psi}}^{ensuremath{'}}ensuremath{rightarrow}O+ensuremath{omega}(ensuremath{sim}32%)$." @default.
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- W1977332247 date "1976-03-01" @default.
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- W1977332247 title "The psion family: Relativistic charmonium" @default.
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- W1977332247 doi "https://doi.org/10.1103/physrevd.13.1345" @default.
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