Abstract
Abstract Based on the diquark cluster model, the widths and branching ratios of the q 2 q 2 states, which consist of u and d quarks, as well as the mass spectrum are predicted. The mass spectrum is calculated using a mass formula in which all of the parameters are determined using known baryon masses and experimental data for dibaryon resonances: no free parameters remain. The widths and branching ratios are also estimated by the use of an approximated formula in which experimental data for the masses and widths of the meson q q are used and again no free parameters remain. It is shown that the present model can explain in a satisfactory fashion the masses and the widths of many exotic mesons discovered recently in s s - depleted reactions.
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