Implication of the proton electric FF space-like behavior puzzle in various physical phenomena

TL;DR

This paper explores the conflicting behaviors of the proton electric form factor in the space-like region, analyzing implications for charge distribution, sum rules, strange form factors, and deuteron structure, based on a 10-resonance model.

Contribution

It introduces a 10-resonance model demonstrating the necessity of a zero in G_{Ep}(Q^2) around 13 GeV^2 to reconcile experimental data and theoretical properties.

Findings

Existence of a zero in G_{Ep}(Q^2) near 13 GeV^2

Contradictory behaviors of G_{Ep}(Q^2) in space-like region

Implications for charge distribution and sum rules

Abstract

By means of the 10-resonance unitary and analytic model of nucleon electromagnetic structure it is demonstrated that the JLab proton polarization data on the ratio $\mu_p G_{Ep}(Q^2)/G_{Mp}(Q^2)$ are consistent with all form factor properties, however, they strongly require an existence of the zero in G_{Ep}(Q^2) around Q^2=13 GeV^2. As a result there are two contradicting behaviors of G_{Ep}(Q^2) in space-like region. Consequences of this phenomenon on the charge distribution within the proton, on the saturation of the new proton-neutron q^2-dependent sum rule, on the behavior of strange nucleon form factors and the deuteron elastic structure functions through the impulse approximation are investigated.