2 papers
hep-ex2021
Observation of Electromagnetic Dalitz Decays to , and
BESIII Collaboration, M. Ablikim, M. N. Achasov +543
Using a sample of about 10 billion events collected at a center-of-mass energy GeV with the BESIII detector, the electromagnetic Dalitz decays $J/ψ\to e^+e^…
hep-ex2017
Measurement of at from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure
M. Ablikim, M. N. Achasov, S. Ahmed +436
Using collision data collected with the BESIII detector at the BEPCII collider corresponding to an integrated luminosity of 5.2 at center-of-mass energies ($…