Observation of J/ψ Electromagnetic Dalitz Decays to X(1835), X(2120) and X(2370) BESIII recently reports the first observation of J/ψ Electromagnetic (EM) Dalitz decays to X(1835), X(2120) and X(2370) and the measurement of the transition form factor of J/ψ to X(1835). It has been published online in the Journal of Physical Review Letter on July 9, 2022 [Phys. Rev. Lett. 129 (2022) 022002].