Nucleon Electromagnetic Form Factors in the Timelike Region

Abstract

The electromagnetic form factors of the proton and the neutron in the timelike region are reviewed. In view of the forthcoming experimental projects devoted to investigate these observables, we present the current status of the field and we emphasize the relevant role, that accurate measurements, refined phenomenological analyses, as well as microscopic models will play with the goal of achieving deeper insights into the structure of the nucleon and its inner dynamics.

60 pages, 35 figures. To be published in Progress in Particle and Nuclear Physics 2013

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• Dynamical mass generation in Minkowski space at QCD scale
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• Study of $e^{+}{e}^{-}\to {\Omega }^{-}{\bar{\Omega }}^{+}$ at center-of-mass energies from 3.49 to 3.67 GeV
• Proton Electromagnetic Form Factors in the Time-like Region through the Scan Technique
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• Electromagnetic form factors of neutron and neutral stange hyperons in the oscillating view of point
• Electromagnetic form factors of ${\Lambda }_b$ in the Bethe-Salpeter equation approach
• Finite Volume Corrections to the Electromagnetic Mass of Composite Particles
• Exploring the flavor content of light and heavy-light pseudoscalars
• Dispersion-theoretical analysis of the electromagnetic form factors of the $\Lambda$ hyperon
• The fourth dimension of the nucleon structure: spacetime analysis of the timelike electromagnetic proton form factors
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• Using $\bar{p}p$ and $e^{+}{e}^{-}$ Annihilation Data to Refine Bounds on the Baryon-Number-Violating Dinucleon Decays $nn\to e^{+}{e}^{-}$ and $nn\to {\mu }^{+}{\mu }^{-}$
• Electromagnetic form factors of ${\Sigma }^{+}$ and ${\Sigma }^{-}$ in the vector meson dominance model
• Radiative corrections for the decay ${\Sigma }^0\to \Lambda e^{+}{e}^{-}$
• The electromagnetic Sigma-to-Lambda transition form factors with coupled-channel effects in the space-like region
• The electromagnetic form factors of ${\Lambda }_c$ hyperon in the vector meson dominance model
• Compared analysis of time-like hyperon form factors
• Study of $\psi (3770)$ decaying to Baryon anti-Baryon Pairs
• Electromagnetic nucleon form factors in the extended vector meson dominance model
• Analytic continuation of nucleon electromagnetic form factors in the time-like region
• The electromagnetic form factors and spin polarization of ${\Lambda }_c^{+}$ in the process $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$
• Differential Cross Section Predictions for PRad-II from Dispersion Theory
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• Soft rescattering in the timelike proton form factor within a spacetime scheme
• Spin-1 particles and perturbative QCD
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• Observation of $\Xi (1530{)}^0$ Polarization and Determination of Its Electric and Magnetic Moments in $\psi (3686)\to \Xi (1530{)}^0\bar{\Xi }(1530{)}^0$
• Time-like electromagnetic form factors of $\Lambda ,\Sigma$ and ${\Xi }^{+}$ in a light-front quark model
• Baryon Form Factors
• Prediction of neutron electromagnetic form factors behaviors just by the proton electromagnetic form factors data