Study of $e^{+}{e}^{-}\to {\Sigma }^0\overline{\Sigma }{}^0$ and ${\Sigma }^{+}\overline{\Sigma }{}^{-}$ by Initial State Radiation Method at Belle

Abstract

The processes $e^{+}{e}^{-}\to {\Sigma }^0\overline{\Sigma }{}^0$ and $e^{+}{e}^{-}\to {\Sigma }^{+}\overline{\Sigma }{}^{-}$ are studied using initial-state-radiation events in a sample of 980 $\,\mbox{fb}^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider. The cross sections from the mass threshold to $3\mathrm{Ge}\mathrm{V}/c^2$ and the effective form factors of ${\Sigma }^0$ and ${\Sigma }^{+}$ are measured. In the charmonium region, we observe the decays $J/\psi \to {\Sigma }^0\overline{\Sigma }{}^0$ and $J/\psi \to {\Sigma }^{+}\overline{\Sigma }{}^{-}$ and determine the respective branching fractions.

accepted by Phys. Rev. D

References in corpus (5)

• Measurement of the near-threshold $e^{+}{e}^{-}\to D\bar{D}$ cross section using initial-state radiation
• Unexpected features of e+e-->ppbar and e+e-->lambda-lambdabar cross sections near threshold
• ${\Sigma }^{+}$ and ${\bar{\Sigma }}^{-}$ polarization in the $J/\psi$ and $\psi (3686)$ decays
• The electromagnetic form factors of the $\Lambda$ in the timelike region
• On the strong energy dependence of the e^+e^- to ppbar amplitude near threshold

Cited by in corpus (5)

• Determination of the ${\Sigma }^{+}$ Timelike Electromagnetic Form Factors
• $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ cross sections and the ${\Lambda }_c^{+}$ electromagnetic form factors within the extended vector meson dominance model
• Isospin strikes back
• Chiral-odd generalized parton distributions for the low-lying octet baryons
• Accessing baryon-antibaryon generalized distribution amplitudes in $e^{\pm }\gamma \to e^{\pm }B\bar{B}$