Precision Rosenbluth Measurement of the Proton Elastic Form Factors

2004/10/08 by I. A. Qattan, J. Arrington, R. E. Segel +62 · 9 citations
Engineering · Physics and Astronomy · #Particle Accelerators and Free-Electron Lasers #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex

paper · pdf · doi:10.1103/physrevlett.94.142301

published as Phys.Rev.Lett.94:142301,2005 · 5 pages, 3 figures, submitted to PRL

arxiv created 2004/10/08 · openalex publication_date 2005/04/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report the results of a new Rosenbluth measurement of the proton electromagnetic form factors at Q2 values of 2.64, 3.20, and 4.10 GeV2. Cross sections were determined by detecting the recoiling proton, in contrast to previous measurements which detected the scattered electron. Cross sections were determined to 3%, with relative uncertainties below 1%. The ratio mu(p)G(E)/G(M) was determined to 4%-8% and showed mu(p)G(E)/G(M) approximately 1. These results are consistent with, and much more precise than, previous Rosenbluth extractions. They are inconsistent with recent polarization transfer measurements of similar precision, implying a systematic difference between the techniques.

Cited by

• Timelike and spacelike nucleon electromagnetic form factors beyond relativistic constituent quark models
• Extraction of proton form factors in the timelike region from unpolarizede+e−→pp¯events
• Global analysis of proton elastic form factor data with two-photon exchange corrections
• Testing axial and electromagnetic nucleon form factors in time-like regions in the processesp¯+n→π−+ℓ−+ℓ+andp¯+p→π0+ℓ−+ℓ+,ℓ=e,μ
• Nucleon form factors in a light-cone quark model with two-photon exchange
• Nucleon electromagnetic form factors
• Two photon exchange contributions to elastic e+p→ e+p process in the non-local field formalism
• Inclusive scattering data on light nuclei as a tool for the extraction of
• Electromagnetic form factors of the nucleon: New fit and analysis of uncertainties