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Diquark model of exotic mesons

D. B. Lichtenberg·R. Roncaglia·E. Predazzi
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Abstract

This is a conference mostly devoted to diquarks. Although an exotic meson can in principle be composed of a diquark and an antidiquark, such an exotic is unlikely to be experimentally observable in the near future. The reason, according to the model, is that diquark-antidiquark exotics have masses well above the threshold for decay into two mesons, and are likely to have widths too large to make them observable. A possible exception is a $ u d \bar b \bar b$ exotic, but it will be a long time before such a state can be observed even if it is stable against strong decay.

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D. B. Lichtenberg, R. Roncaglia, E. Predazzi. 1996-11-26. Diquark model of exotic mesons. https://arxiv.org/abs/hep-ph/9611428

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