Measurement of proton electromagnetic form factors in the time-like region using initial state radiation at BESIII

Abstract

The electromagnetic process $e^{+}{e}^{-}\to p\bar{p}$ is studied with the initial-state-radiation technique using 7.5 fb${}^{-1}$ of data collected by the BESIII experiment at seven energy points from 3.773 to 4.600 GeV. The Born cross section and the effective form factor of the proton are measured from the production threshold to 3.0 GeV/$c^2$ using the $p\bar{p}$ invariant-mass spectrum. The ratio of electric and magnetic form factors of the proton is determined from the analysis of the proton-helicity angular distribution.

References in corpus (5)

• Dispersion analysis of the nucleon form factors including meson continua
• Measurement of the proton form factor by studying $e^{+}{e}^{-}\to p\bar{p}$
• Periodic interference structures in the time-like proton form factor
• Study of the process $e^{+}{e}^{-}\to p\bar{p}$ via initial state radiation at BESIII
• Nucleon form factors and final state radiative corrections to $e^{+}{e}^{-}\to \bar{p}p\gamma$

Cited by in corpus (26)

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• Natural explanation of recent results on $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$
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• Compared analysis of time-like hyperon form factors
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• Search for damped oscillating structures from charged pion electromagnetic form factor data
• Differential Cross Section Predictions for PRad-II from Dispersion Theory
• Coupled-channel analysis of the near-threshold $e^{+}{e}^{-}\to N\bar{N}$ cross sections
• Microscopic parametrization of the near threshold oscillations of the nucleon time-like effective electromagnetic form factors
• Contribution of the non-resonant mechanism to the double and single differential distributions over the invariant variables in the reaction $e^{+}+e^{-}\to N+\bar{N}+{\pi }^0$
• Prediction of neutron electromagnetic form factors behaviors just by the proton electromagnetic form factors data
• Baryon Form Factors
• Accessing baryon-antibaryon generalized distribution amplitudes in $e^{\pm }\gamma \to e^{\pm }B\bar{B}$
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