Study of the process $e^{+}{e}^{-}\to p\bar{p}$ via initial state radiation at BESIII

Abstract

The Born cross section for the process $e^{+}{e}^{-}\to p\bar{p}$ is measured using the initial state radiation technique with an undetected photon. This analysis is based on datasets corresponding to an integrated luminosity of 7.5 fb${}^{-1}$, collected with the BESIII detector at the BEPCII collider at center of mass energies between 3.773 and 4.600 GeV. The Born cross section for the process $e^{+}{e}^{-}\to p\bar{p}$ and the proton effective form factor are determined in the $p\bar{p}$ invariant mass range between 2.0 and 3.8 GeV/$c^2$ divided into 30 intervals. The proton form factor ratio ($|G_E|/|G_M|$) is measured in 3 intervals of the $p\bar{p}$ invariant mass between 2.0 and 3.0 GeV/$c^2$.

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Cited by in corpus (20)

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• New fit of time-like proton electromagnetic form factors from $e^{+}{e}^{-}$ colliders
• Probing the internal structure of baryons
• $N\bar{N}$ production in $e^{+}{e}^{-}$ annihilation near the threshold revisited
• Proton Electromagnetic Form Factors in the Time-like Region through the Scan Technique
• New insights into the oscillation of the nucleon electromagnetic form factors
• Final-state interaction in the process $e^{+}{e}^{-}\to {\Lambda }_c{\bar{\Lambda }}_c$
• Understanding oscillating features of the timelike nucleon electromagnetic form factors within the extending vector meson dominance model
• Natural explanation of recent results on $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$
• Production of $D^{(\ast )}{\bar{D}}^{(\ast )}$ near the thresholds in $e^{+}{e}^{-}$ annihilation
• Near-threshold resonance in $e^{+}{e}^{-}\to {\Lambda }_c{\bar{\Lambda }}_c$ process
• Electromagnetic nucleon form factors in the extended vector meson dominance model
• Search for damped oscillating structures from charged pion electromagnetic form factor data
• Microscopic parametrization of the near threshold oscillations of the nucleon time-like effective electromagnetic form factors
• Coupled-channel analysis of the near-threshold $e^{+}{e}^{-}\to N\bar{N}$ cross sections
• Baryon Form Factors
• Accessing baryon-antibaryon generalized distribution amplitudes in $e^{\pm }\gamma \to e^{\pm }B\bar{B}$