A description of the ratio between electric and magnetic proton form factors by using space-like, time-like data and dispersion relations

Abstract

We use the available information on the ratio between the electric and magnetic proton form factors coming from recently published space-like data and from the few available time-like data. We apply a dispersive procedure on these data to evaluate the behaviour of this ratio, as a complex function, for all values of q^2.

12 pages, 7 Encapsulated Postscript figures, uses epsfig, rotating, exscale, amsmath, cite, latexsym, graphics, color packages, added references

References in corpus (11)

• The ratio of proton's electric to magnetic form factors measured by polarization transfer
• How to reconcile the Rosenbluth and the polarization transfer method in the measurement of the proton form factors
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• Measurement of gamma gamma -> p p-bar production at Belle
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Cited by in corpus (8)

• Nucleon Electromagnetic Form Factors in the Timelike Region
• Study of the process $e^{+}{e}^{-}\to p\bar{p}$ via initial state radiation at BESIII
• Testing axial and electromagnetic nucleon form factors in time-like regions in the processes $\bar{p}+n\to {\pi }^{-}+{\ell }^{-}+{\ell }^{+}$ and $\bar{p}+p\to {\pi }^0+{\ell }^{-}+{\ell }^{+}$, $\ell =e$, $\mu$
• Radiative corrections to hard spectator scattering in $B\to \pi \pi$ decays
• Prospects for e+e- physics at Frascati between the phi and the psi
• Proton Electromagnetic Form Factors in the Time-like Region through the Scan Technique
• Nucleon form factors: the space-time connection
• Radiative corrections in nucleon time-like form factors measurements