angular analysis 1BESIII detector 1branching fraction 1double dalitz decay 1electric and magnetic moments 1eta meson decay 1form factors 1hyperon polarization 1psi(3686) decay 1rare decay 1
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hep-ex2026
Measurement of the double Dalitz decay
BESIII Collaboration, M. Ablikim, M. N. Achasov +689
The BESIII experiment measured the rare decay of the eta meson into two electron-positron pairs, determining its branching fraction to be about 2.6 × 10⁻⁵.
hep-ex2026
Observation of Polarization and Determination of Its Electric and Magnetic Moments in
BESIII Collaboration, M. Ablikim, M. N. Achasov +703
The BESIII experiment observed the polarization of the hyperon Ξ(1530)^0 in ψ(3686)→Ξ(1530)^0 anti‑Ξ(1530)^0 decays and measured its electric and magnetic multipole moments via ang…
hep-ex2026★ 1 cited
Study of the Magnetic Dipole Transition of via
BESIII Collaboration, M. Ablikim, M. N. Achasov +692
Using events collected with the BESIII detector at the BEPCII collider, we present the first amplitude analysis of …