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Abstract: Decays of both $\eta$ and $\eta^\prime$ provide very useful information inour understanding of low-energy QCD, and experimental signatures for thesedecays would be extremely helpful at BES-III. The rare decays of the $\eta$ and$\eta^\prime$ mesons could serve as a low-energy test of the Standard Model andits beyond. The sensitivities of the measurements of $\eta$ and $\eta^\prime$decays are discussed at BES-III, in which the $\eta$ and $\eta^\prime$ mesonsare produced in the $\psi$ decays.



Autor: Hai-Bo Li

Fuente: https://arxiv.org/







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