Recent results on hyperon pair production and nucleon time-like form factors at BESIII

Abstract

The BESIII experiment, based on the BEPCII collider at IHEP in Beijing, China, is capable of measuring nucleon form factors with unprecedented precision. We report recent results achieved by the BESIII collaboration concerning the nucleon time-like form factors and the hyperon pair production. Specifically, we outline the results obtained by the study of the process e^+e^- \to p \overline pe+e−→pp¯, using both the scan-energy and initial-state radiation techniques, those of the process e^+e^- \to n \overline ne+e−→nn¯, and the study of the \SigmaΣ polarization regarding the process e^+e^- \to J/\psi \to \Sigma^+\overline \Sigma{}^-e+e−→J/ψ→Σ+Σ¯−.