Electromagnetic form factors of neutron and neutral stange hyperons in the oscillating view of point

Abstract

Based on the recently precise measurements of the electron-positron annihilation reactions into a neutron and anti-neutron pair by BESIII collaboration, the effective form factor of neutron was determined in the time like region, and it was found that the effective form factor of neutron is smaller than the ones of proton. The effective form factors of neutron shows a periodic behaviour, similar to the case of proton. Here, a compared analysis for $\Lambda$, ${\Sigma }^0$ and ${\Xi }^0$ is performed. Fits of the available data on the effective form factors of $\Lambda$, ${\Sigma }^0$ and ${\Xi }^0$ with charge zero, allow to show a universal phenomenon of the oscillation behavior in their effective form factors. However, this needs to be confirmed by future precise experiments. Both theoretical and experimental investigations of this phenomenon can shed light on the reaction mechanisms of the electron-positron annihilation process.

4 figures, 5 pages. Experimental data on ${\Xi }^0$ are included, title is slightly modified

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Cited by in corpus (9)

• Toy model to understand oscillatory behavior in timelike nucleon form factors
• The $\Sigma$ and $\Xi$ electromagnetic form factors in the extended vector meson dominance model
• New insights into the oscillation of the nucleon electromagnetic form factors
• Determination of the ${\Sigma }^{+}$ Timelike Electromagnetic Form Factors
• Production and decay of polarized hyperon-antihyperon pairs
• Electromagnetic $|G_E/G_M|$ ratios of hyperons at large timelike $q^2$
• $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ cross sections and the ${\Lambda }_c^{+}$ electromagnetic form factors within the extended vector meson dominance model
• Understanding oscillating features of the timelike nucleon electromagnetic form factors within the extending vector meson dominance model
• The electromagnetic form factors and spin polarization of ${\Lambda }_c^{+}$ in the process $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$