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 (24)

• Design and Construction of the BESIII Detector
• Future Physics Programme of BESIII
• Measurement of the ${\mathrm{e}}^{+}{\mathrm{e}}^{-}\to {\pi }^{+}{\pi }^{-}$ Cross Section between 600 and 900 MeV Using Initial State Radiation
• Dispersion analysis of the nucleon form factors including meson continua
• Search for hadronic transition ${\chi }_{cJ}\to {\eta }_c{\pi }^{+}{\pi }^{-}$ and observation of ${\chi }_{cJ}\to K\bar{K}\pi \pi \pi$
• Study of e+e- --> p anti-p via initial-state radiation at BABAR
• Spectroscopy at B-factories Using Hard Photon Emission
• Precision measurement of the integrated luminosity of the data taken by BESIII at center of mass energies between 3.810 GeV and 4.600 GeV
• Precision Measurements of the Timelike Electromagnetic Form Factors of Pion, Kaon, and Proton
• Exclusive event generator for $e^{+}{e}^{-}$ scan experiments
• Measurement of proton electromagnetic form factors in $e^{+}{e}^{-}\to p\bar{p}$ in the energy region 2.00-3.08 GeV
• Measurement of the proton form factor by studying $e^{+}{e}^{-}\to p\bar{p}$
• Production of charged pions, kaons and protons in e+e- annihilations into hadrons at sqrt{s} = 10.54 GeV
• Study of the process $e^{+}{e}^{-}\to p\bar{p}$ in the c.m. energy range from threshold to 2 GeV with the CMD-3 detector
• Periodic interference structures in the time-like proton form factor
• A measurement of the CP-conserving component of the decay KS -> pi+ pi- pi0
• Measurement of the cross section for e^+e^- -> ppbar at center-of-mass energies from 2.0 to 3.07 GeV
• Study of the process $e^{+}{e}^{-}\to p\bar{p}$ via initial state radiation at BESIII
• New structures in the proton-antiproton system
• Observation of a Fine Structure in $e^{+}{e}^{-}\to$ hadrons Production at the Nucleon-antinucleon Threshold
• A model for space and time-like proton (neutron) form factors
• Phenomenological analysis of near threshold periodic modulations of the proton timelike form factor
• No Sommerfeld resummation factor in e+e- -> ppbar ?
• Nucleon form factors and final state radiative corrections to $e^{+}{e}^{-}\to \bar{p}p\gamma$

Cited by in corpus (26)

• 50 Years of Quantum Chromodynamics
• New insights into the nucleon's electromagnetic structure
• Measurement of the Energy-Dependent Electromagnetic Form Factors of a Charmed Baryon
• Measurement of cross section for $e^{+}{e}^{-}\to {\Xi }^0{\bar{\Xi }}^0$ near threshold
• 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
• Study of $e^{+}{e}^{-}\to {\Omega }^{-}{\bar{\Omega }}^{+}$ at center-of-mass energies from 3.49 to 3.67 GeV
• New insights into the oscillation of the nucleon electromagnetic form factors
• Electromagnetic form factors of neutron and neutral stange hyperons in the oscillating view of point
• Production and decay of polarized hyperon-antihyperon pairs
• 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
• Compared analysis of time-like hyperon form factors
• Novel method to extract the femtometer structure of strange baryons using the vacuum polarization effect
• Electromagnetic nucleon form factors in the extended vector meson dominance model
• 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 $e^{\pm }\gamma \to e^{\pm }B\bar{B}$
• Observation of $\bar{\Lambda }p\to K^{+}{\pi }^{+}{\pi }^{-}{\pi }^0$ and $\bar{\Lambda }p\to K^{+}{\pi }^{+}{\pi }^{-}2{\pi }^0$