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History of exotic Meson (4-quark) and Baryon (5-quark) States

D. P. Roy
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Abstract

I briefly review the history of exotic meson (4-quark) and baryon (5-quark) states, which is rooted in the formalism of Regge pole and duality. There are robust model-independent predictions for the exchange of 4-quark (Baryonium) Regge trajectories in several processes, which are strongly supported by experiment. On the other hand the predictions for the spectroscopy of 4-quark resonances are based on specific QCD inspired models, with some experimental support. The corresponding predictions for the recently discovered exotic baryon (Pentaquark) state are briefly discussed.

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D. P. Roy. 2003-12-24. History of exotic Meson (4-quark) and Baryon (5-quark) States. https://doi.org/10.1088/0954-3899%2F30%2F3%2Fr02

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