Canonical interpretation of the η₂(1870)
classification
✦ hep-ph
keywords
conventionaldecayappeararguecanonicalcontradictdiscussedhybrid
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We argue that the mass, production, total decay width, and decay pattern of the $\eta_2(1870)$ do not appear to contradict with the picture of it being the conventional $2 ^1D_2$ $q\bar{q}$ state. The possibility of the $\eta_2(1870)$ being a mixture of the conventional $q\bar{q}$ and the hybrid is also discussed.
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