3 papers
hep-ex2025
Search for sub-GeV invisible particles in inclusive decays of to
BESIII Collaboration, M. Ablikim, M. N. Achasov +696
A search for an invisible particle, , with a mass between 0 and 0.96 , is performed in the process using $(8774.0\pm39.4)\times…
hep-ex2025
Improved Measurements of and
BESIII Collaboration, M. Ablikim, M. N. Achasov +677
Using 20.3 fb of collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we measure the branching fractions of …
hep-ex2024
Measurement of the Branching Fraction for the Decay
BESIII Collaboration, M. Ablikim, M. N. Achasov +650
Using events collected by the BESIII detector operating at the BEPCII collider, we present the first observations of the decays $χ_{cJ}(J=0,1,2…