Comment on the narrow charmonium state of Belle at 3871.8 MeV as a deuson

Abstract

It is pointed out that the narrow charmonium state at 3871.8 MeV reported by the Belle collaboration is likely to be a $D{\bar{D}}^{\ast }$ deuteronlike meson-meson state called a deuson. It was predicted near the $D{\bar{D}}^{\ast }$ threshold over 10 years ago. Its spin-parity would be 0-+ or 1++ and an important decay mode should be via $D^0{\bar{D}}^{\ast 0}$ to $D^0{\bar{D}}^0{\pi }^0$. Its width to that channel should then be of the order 50 keV. Note: A more detailed update of this unpublished note is in hep-ph/0402237.

arXiv comment4 pages. A more detailed update of this unpublished note is in hep-ph/0402237

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