BESIII reports a novel extraction of hyperon form factors via vacuum polarization enhancement at J/psi, yielding R = 0.860 ± 0.029 ± 0.010 and phase differences of 1.011 ± 0.094 ± 0.010 rad and 2.128 ± 0.094 ± 0.010 rad for the two charge-conjugate channels, with CP symmetry consistent.
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First absolute branching fraction measurements yield (3.81 ± 0.18stat ± 0.20syst)×10^{-4} for D0→γ K*0 and (2.51 ± 0.44stat ± 0.11syst)×10^{-5} for D0→γφ with 26.8σ and 7.9σ significance.
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Novel method to extract the femtometer structure of strange baryons using the vacuum polarization effect
BESIII reports a novel extraction of hyperon form factors via vacuum polarization enhancement at J/psi, yielding R = 0.860 ± 0.029 ± 0.010 and phase differences of 1.011 ± 0.094 ± 0.010 rad and 2.128 ± 0.094 ± 0.010 rad for the two charge-conjugate channels, with CP symmetry consistent.
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Measurements of the absolute branching fractions of $D^0\to\gamma \bar K^{*0}$ and $D^0\to\gamma \phi$
First absolute branching fraction measurements yield (3.81 ± 0.18stat ± 0.20syst)×10^{-4} for D0→γ K*0 and (2.51 ± 0.44stat ± 0.11syst)×10^{-5} for D0→γφ with 26.8σ and 7.9σ significance.