Understanding oscillating features of the timelike nucleon electromagnetic form factors within the extending vector meson dominance model

Abstract

We investigate the nonmonotonic behavior observed in the time-like nucleon electromagnetic form factors. Using a phenomenological extending vector meson dominance model, where the ground states $\rho$ and $\omega$ and their excited states $\rho (2D)$, $\omega (3D)$, and $\omega (5S)$ are taken into account, we have successfully reproduced the cross sections of $e^{+}{e}^{-}\to p\bar{p}$ and $e^{+}{e}^{-}\to n\bar{n}$ reactions. Furthermore, we have derived the nucleon electromagnetic form factors in the time-like region, and it is found that the so-called periodic behaviour of the nucleon effective form factors is not confirmed. However, there are indeed nonmonotonic structures in the line shape of nucleon effective form factors, which can be naturally reproduced by considering the contributions from the low-lying excited vector states.

arXiv commentPublished version

References in corpus (54)

• The ratio of proton's electric to magnetic form factors measured by polarization transfer
• Measurement of GEp/GMp in ep -> ep to Q2 = 5.6 GeV2
• Dispersion analysis of the nucleon form factors including meson continua
• Study of e+e- --> p anti-p via initial-state radiation at BABAR
• Re-analysis of the nucleon space- and time-like electromagnetic form factors in a two-component model
• Hadronic structure functions in the $e^{+}{e}^{-}\to \bar{\Lambda }\Lambda$ reaction
• Exclusive event generator for $e^{+}{e}^{-}$ scan experiments
• Charmed-strange mesons revisited: mass spectra and strong decays
• Nucleon electromagnetic form factors from lattice QCD using a nearly physical pion mass
• Measurement of proton electromagnetic form factors in $e^{+}{e}^{-}\to p\bar{p}$ in the energy region 2.00-3.08 GeV
• New Features in the Electromagnetic Structure of the Neutron
• The electromagnetic form factors of the proton in the timelike region
• Study of the process $e^{+}{e}^{-}\to n\bar{n}$ at the VEPP-2000 $e^{+}{e}^{-}$ collider with the SND detector
• Measurement of the proton form factor by studying $e^{+}{e}^{-}\to p\bar{p}$
• Measurement of $e^{+}{e}^{-}\to K^{+}{K}^{-}$ cross section at $\sqrt{s}=2.00-3.08$ 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
• Structure of the nucleon from electromagnetic space-like and time-like form factors
• Periodic interference structures in the time-like proton form factor
• ${\Sigma }^{+}$ and ${\bar{\Sigma }}^{-}$ polarization in the $J/\psi$ and $\psi (3686)$ decays
• First Measurements of Timelike Form Factors of the Hyperons, Lambda0, Sigma0, Sigma+, Xi0, Xi-, and Omega-, and Evidence of Diquark Correlations
• Luminosity measurements for the R scan experiment at BESIII
• Measurement of proton electromagnetic form factors in the time-like region using initial state radiation at BESIII
• Time-like and space-like electromagnetic form factors of nucleons, a unified description
• Observation of a resonant structure in $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^0{\pi }^0$
• The electromagnetic form factors of $\Lambda$ hyperon in the vector meson dominance model
• Observation of a resonant structure in $e^{+}{e}^{-}\to \omega \eta$ and another in $e^{+}{e}^{-}\to \omega {\pi }^0$ at center-of-mass energies between 2.00 and 3.08 GeV
• Study of the process $e^{+}{e}^{-}\to p\bar{p}$ via initial state radiation at BESIII
• Towards two-body strong decay behavior of higher $\rho$ and ${\rho }_3$ mesons
• Observation of a structure in $e^{+}{e}^{-}\to \varphi {\eta }^{\prime }$ at $\sqrt{s}$ from 2.05 to 3.08 GeV
• A model for space and time-like proton (neutron) form factors
• Phenomenological analysis of near threshold periodic modulations of the proton timelike form factor
• New fit of time-like proton electromagnetic form factors from $e^{+}{e}^{-}$ colliders
• On relativization of the Sommerfeld-Gamow-Sakharov factor
• Probing the internal structure of baryons
• Cross section measurements of $e^{+}{e}^{-}\to K^{+}{K}^{-}{K}^{+}{K}^{-}$ and $\varphi K^{+}{K}^{-}$ at center-of-mass energies from 2.10 to 3.08 GeV
• Measurement of $\Lambda$ baryon polarization in $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ at $\sqrt{s}=3.773$ GeV
• Measurement of the Born cross sections for $e^{+}{e}^{-}\to {\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ at center-of-mass energies between $2.00$ and $3.08$ GeV
• Study of the process $e^{+}{e}^{-}\to \varphi \eta$ at center-of-mass energies between 2.00 and 3.08 GeV
• Light unflavor vector meson spectroscopy around the mass range of $2.4\sim 3$ GeV and possible experimental evidence
• Electromagnetic form factors of $\Lambda$ hyperon in the vector meson dominance model and a possible explanation of the near-threshold enhancement of the $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ reaction
• Timelike nucleon electromagnetic form factors: All about interference of isospin amplitudes
• $N\bar{N}$ production in $e^{+}{e}^{-}$ annihilation near the threshold revisited
• Toy model to understand oscillatory behavior in timelike nucleon form factors
• Proton Electromagnetic Form Factors in the Time-like Region through the Scan Technique
• Cross section measurement of $e^{+}{e}^{-}\to K_S^0{K}_L^0$ at $\sqrt{s}=2.00-3.08\mathrm{GeV}$
• Deciphering the light vector meson contribution to the cross sections of $e^{+}{e}^{-}$ annihilations into the open-strange channels through a combined analysis
• The $\Sigma$ and $\Xi$ electromagnetic form factors in the extended vector meson dominance model
• QCD Compositeness as Revealed in Exclusive Vector Boson Reactions through Double-Photon Annihilation: $e^{+}{e}^{-}\to \gamma {\gamma }^{\ast }\to \gamma V^0$ and $e^{+}{e}^{-}\to {\gamma }^{\ast }{\gamma }^{\ast }\to V^0{V}^0$
• Electromagnetic form factors of neutron and neutral stange hyperons in the oscillating view of point
• New insights into the oscillation of the nucleon electromagnetic form factors
• Measurement of the integrated luminosity and the center-of-mass energy of the data taken by BESIII at $\sqrt{s}=2.125$ GeV
• Toward $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ annihilation inspired by higher $\rho$ mesonic states around 2.2 GeV
• Compared analysis of time-like hyperon form factors
• QCD Constituent Counting Rules for Neutral Vector Mesons

Cited by in corpus (4)

• Electromagnetic nucleon form factors in the extended vector meson dominance model
• The electromagnetic form factors and spin polarization of ${\Lambda }_c^{+}$ in the process $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$
• Coupled-channel analysis of the near-threshold $e^{+}{e}^{-}\to N\bar{N}$ cross sections
• Accessing baryon-antibaryon generalized distribution amplitudes in $e^{\pm }\gamma \to e^{\pm }B\bar{B}$