Observation of the Anomalous Shape of X(1840) in J/ψ → γ3(π+ π-) Indicating a Second Resonance Near p(p)over-bar Threshold
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- 刊物名称:PHYSICAL REVIEW LETTERS
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- 作者:Ablikim, M.; Achasov, M. N.; Adlarson, P. et al.(BESIII Collaboration)
- 发表年度:2024
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