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arXiv · 2511.10341

Hydrogen-like symmetry in Regge spectrum of light mesons: selection of states

S. S. Afonin·A. V. Sarantsev·A. M. Tsymbal
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Abstract

We discuss the $(L,n)$-classification of excited light non-strange mesons, where $L$ and $n$ are orbital and radial quantum numbers. The selection of true non-strange quark-antiquark excited states and assigning to them definite $L$ and $n$ is a notoriously confusing problem. Three guiding principles for selection of correct observed states are formulated. They are applied for construction of a new $(L,n)$-classification. This classification is consistent both with the approximate Regge form of the spectrum and with the hydrogen-like degeneracy, i.e., the dependence of mass on the sum $L+n$.

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S. S. Afonin, A. V. Sarantsev, A. M. Tsymbal. 2025-11-13. Hydrogen-like symmetry in Regge spectrum of light mesons: selection of states. https://doi.org/10.1134/s1063779625701369

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