Measurement of Born cross section of $e^{+}{e}^{-}\to {\Sigma }^{+}{\bar{\Sigma }}^{-}$ at center-of-mass energies between 3.510 and 4.951 GeV

Abstract

Using 24.1 fb${}^{-1}$ of $e^{+}{e}^{-}$ collision data collected with the BESIII detector at the BEPCII collider, the Born cross sections and effective form factors of the $e^{+}{e}^{-}\to {\Sigma }^{+}{\bar{\Sigma }}^{-}$ reaction are measured. The measurements are performed at center-of-mass energies ranging from 3.510 to 4.951 GeV. No significant evidence for the decay of the charmonium(-like) states, $\psi (3770)$, $\psi (4040)$, $\psi (4160)$, $Y(4230)$, $Y(4360)$, $\psi (4415)$, and $Y(4660)$, into a ${\Sigma }^{+}{\bar{\Sigma }}^{-}$ final state is observed. Consequently, upper limits for the products of the branching fractions and the electronic partial widths at the 90% confidence level are reported for these decays.

arXiv comment22 pages, 3 figures, 3 tables, consistent with the publication in JHEP05(2024)022

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• Measurement of Born cross section of $e^{+}{e}^{-}\to {\Sigma }^0{\bar{\Sigma }}^0$ at $\sqrt{s}=3.50-4.95$ GeV
• Observation of Transverse Polarization and Determination of Psionic Form Factors of the $\Lambda$ Hyperon at $\sqrt{s}=3.773$ GeV
• Time-like electromagnetic form factors of $\Lambda ,\Sigma$ and ${\Xi }^{+}$ in a light-front quark model