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Study of the resonance structures in the process e+e- →π+π-J/ψ
(American Physical Society, 2022)
Using about 23 fb-1 of data collected with the BESIII detector operating at the BEPCII storage ring, a precise measurement of the e+e-→π+π-J/ψ Born cross section is performed at center-of-mass energies from 3.7730 to 4.7008 ...