3 papers
hep-ex2025
Study of the electromagnetic Dalitz decay
BESIII Collaboration, M. Ablikim, M. N. Achasov +640
We report the first measurement of the di-electron invariant mass dependent transition form factor in the electromagnetic Dalitz decay using $(10087 \pm 44) \ti…
hep-ex2024
Study of the decays
BESIII Collaboration, M. Ablikim, M. N. Achasov +643
Based on events collected with the BESIII detector operating at the BEPCII collider, we report the first evidence of $χ_{c…
hep-ex2024
Search for the radiative transition
BESIII Collaboration, M. Ablikim, M. N. Achasov +645
Using 9.0 of collision data collected at center-of-mass energies from 4.178 to 4.278 GeV with the BESIII detector at the BEPCII collider, we perform the firs…