2 papers
hep-ex2026
Search for a massless particle beyond the Standard Model in the decay
BESIII Collaboration, M. Ablikim, M. N. Achasov +770
A search for a massless beyond-standard-model particle is performed in the decay using events collected with…
hep-ex2026
Multi-channel joint analysis of the exotic charmonium-like state
BESIII Collaboration, M. Ablikim, M. N. Achasov +692
This paper reports the first multi-channel joint analysis to identify the properties of the exotic charmonium-like state via the electron-positron annihilation…