Measurement of ${\mathrm{\Sigma }}^{+}$ transverse polarization in $e^{+}{e}^{-}$ collisions at $\sqrt{s}=3.68-3.71$ GeV

Using $e^{+}{e}^{-}$ collision data collected with the BESIII detector at seven energy points ranging from 3.68 to 3.71 GeV and corresponding to an integrated luminosity of $652.1\mathrm{p}{\mathrm{b}}^{-1}$, we present an energy-dependent measurement of the transverse polarization, relative phase and modulus ratio of the electromagnetic form factors of the ${\mathrm{\Sigma }}^{+}$ hyperon in the $e^{+}{e}^{-}\to {\mathrm{\Sigma }}^{+}{\bar{\mathrm{\Sigma }}}^{-}$ reaction. These results are helpful to understand the production mechanism of the ${\mathrm{\Sigma }}^{+}$-${\bar{\mathrm{\Sigma }}}^{-}$ pairs.