Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-08-27
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages. A more detailed update of this unpublished note is in hep-ph/0402237
Scientific paper
It is pointed out that the narrow charmonium state at 3871.8 MeV reported by the Belle collaboration is likely to be a $D\bar D^*$ deuteronlike meson-meson state called a deuson. It was predicted near the $D\bar D^*$ threshold over 10 years ago. Its spin-parity would be 0-+ or 1++ and an important decay mode should be via $D^0\bar D^{*0}$ 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 Note: A more detailed update of this unpublished note is in hep-ph/0402237.
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