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hep-ex2026
Observation of a Doubly-strange Hyperon in
BESIII Collaboration, M. Ablikim, M. N. Achasov +758
Based on a sample of events collected with the BESIII detector at BEPCII, we report the first observation of the decay $J/ψ\rightarrow K^- Σ^0 \b…
hep-ex2026
First Measurement of the Absolute Branching Fraction of
BESIII Collaboration, M. Ablikim, M. N. Achasov +691
We apply a tag-and-probe method to precisely measure the absolute branching fraction of the decay with the BESIII experiment at BEPCII. Starting with a large initial s…