Experimental Study of Electromagnetic Timelike Form Factors of Neutron and Proton at the VEPP-2000 e+e– Collider with the SND Detector

M. N. Achasov; A. Yu. Barnyakov; K. I. Beloborodov; A. V. Berdyugin; D.E. Berkaev; A. G. Bogdanchikov; A. A. Botov; V. S. Denisova; T. V. Dimova; V. P. Druzhinin; V. N. Zhabin; V. V. Zhulanov; I. M. Zemlyansky; L. V. Kardapoltsev; A. A. Kattsin; D. P. Kovrizhin; I. A. Koop; A. A. Korol; A. S. Kupich; A. P. Kryukov; N. A. Melnikova; N. Yu. Muchnoy; A. E. Obrazovsky; I. V. Ovtin; E. V. Pakhtusova; E. A. Perevedentsev; K. V. Pugachev; Yu. A. Rogovsky; S. I. Serednyakov; Z.K. Silagadze; I. K. Surin; M. V. Timoshenko; Yu. V. Usov; L. B. Fomin; A. G. Kharlamov; E. A. Éminov; D. A. Shtol

doi:10.1134/s1063779625701539

Key Points

To investigate the electromagnetic timelike form factors of neutrons and protons at the VEPP-2000 collider.
Conducted an experimental study at the VEPP-2000 collider using the SND detector.
Studied the processes e+e– → n\bar{n} and e+e– → p\bar{p} for cross-sectional measurements.
Measured the ratio of electric to magnetic form factors of protons and neutrons near nucleon threshold.
Measured cross section for the process e+e– → p\bar{p}.
The ratio |Ge/Gm| for neutrons is close to 1, indicating expected behavior.
The ratio for protons varies from 1.2 to 1.8, suggesting complexities in their electromagnetic properties.

Implication

Experimental study measures the electromagnetic form factors of neutrons and protons in a collider experiment, indicating significant findings.

Abstract

In an experiment at the VEPP-2000 e⁺e⁻ collider, the processes e⁺e⁻ → nn̄ and e⁺e⁻ → pp̄ were studied. The cross section of the e⁺e⁻ → pp̄ process and the ratio | G_E / G_E G_M . -0em G_M | of electric and magnetic formfactors of proton and neutron were measured near the nucleon threshold with the SND detector. The preliminary value of the | G_E / G_E G_M . -0em G_M | ratio for the neutron is consistent with unity, while for the proton this value varies in the range of 1.2 to 1.8.

Discussion

No takes yet. Share an insight, caveat, or question.

Cite This Study

Achasov et al. (2026) studied this question.

synapsesocial.com/papers/6a17db293fad632b0f9d7ece https://doi.org/10.1134/s1063779625701539

View Full Paper

Ask AI

Bookmark

Share

Experimental Study of Electromagnetic Timelike Form Factors of Neutron and Proton at the VEPP-2000 e+e– Collider with the SND Detector

Key Points

Implication

Abstract

Discussion

Cite This Study

Experimental Study of Electromagnetic Timelike Form Factors of Neutron and Proton at the VEPP-2000 e+e– Collider with the SND Detector

Key Points

Implication

Abstract

Discussion

Cite This Study

Keep reading

Keep reading