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hep-ex2025
Measurements of the branching fractions of and
BESIII Collaboration, M. Ablikim, M. N. Achasov +683
Using a sample of (3686) events collected by the BESIII detector at the BEPCII collider, we measure the branching fractions of the decays $χ_{cJ}\t…
hep-ex2025
Observation of the -annihilation process and measurement of in decays
BESIII Collaboration, M. Ablikim, M. N. Achasov +650
We present the first amplitude analysis and branching fraction measurement of the decay , using collision data collected with the BESIII detector…