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Towards understanding broad degeneracy in non-strange mesons

S. S. Afonin
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Abstract

The spectroscopic regularities of modern empirical data on the non-strange mesons up to 2.4 GeV can be summarized as a systematic clustering of states near certain values of energy. It is getting evident that some unknown X-symmetry triggers the phenomenon. We review the experimental status of this symmetry and recent theoretical attempts put forward for explanation of broad degeneracy.

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S. S. Afonin. 2007-07-06. Towards understanding broad degeneracy in non-strange mesons. https://doi.org/10.1142/s0217732307024024

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