2 papers
hep-ex2026
First Measurement of the Relative Phase between Proton Psionic Form Factors
BESIII Collaboration, M. Ablikim, M. N. Achasov +754
The relative phase between the time-like form factors of the proton is a crucial observable for a complete understanding of its internal structure, yet it has remained unmeasured d…
hep-ex2026
Cross Section Measurements of via Antineutrons Produced by Decays
BESIII Collaboration, M. Ablikim, M. N. Achasov +759
Based on a novel method for producing antineutrons via decays, we report a study of inelastic scattering into final states containing kaons. The analysis uses $(1…