The BESIII collaboration have reported the observation of an anomalous line shape around ppbar mass threshold in the J/ψ'γ3(π+π-) decay, which indicates the existence of a ppbar bound state. The paper was published online in Physical Review Letters.
The BESIII collaboration have reported the observation of an anomalous line shape around ppbar mass threshold in the J/ψ'γ3(π+π-) decay, which indicates the existence of a ppbar bound state. The paper was published online in Physical Review Letters.
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