Zero of the proton electric form factor in the finite value of the spacelike momentum transfer squared
Year: 2026
Type: preprint
Abstract: The behavior of the polarization data on $μ_p(G^p_E(t)/G^p_M(t))$ ratio, at the present day available up to $t=-8.5$ GeV$^2$, obtained in the Jefferson Lab experiments carried out by the Akhiezer-Rekalo polarization method, demonstrates a decreasing tendency, which indicates the possible existence of a zero of the proton electric form factor $G^p_E(t)$ in the finite spacelike momentum transfer squared value. However, recently appeared two papers, investigating these data, one of them also included all other existing data on the nucleon electromagnetic structure in the spacelike and timelike regions, where the existence of such zero was questioned. Nevertheless, the reinvestigations we provide in this paper by means of the Unitary and Analytic model of the nucleon electromagnetic form factors give arguments for the possible existence of such a zero.
Source: arXiv (Cornell University)
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7170095063