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Measurement of GEp/GMp in ep -> ep to Q2 = 5.6 GeV2

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arxiv nucl-ex/0111010 v2 pith:4ZSJZFEK submitted 2001-11-15 nucl-ex

classification nucl-ex
keywords ratiogev2factorsformpolarizationprotonrecoilabove
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The ratio of the electric and magnetic form factors of the proton, GEp/GMp, was measured at the Thomas Jefferson National Accelerator Facility (JLab) using the recoil polarization technique. The ratio of the form factors is directly proportional to the ratio of the transverse to longitudinal components of the polarization of the recoil proton in the elastic $\vec ep \to e\vec p$ reaction. The new data presented in this article span the range 3.5 < Q2 < 5.6 GeV2 and are well described by a linear Q2 fit. Also, the ratio QF2p/F1p reaches a constant value above Q2=2 GeV2.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Electromagnetic form factors of singly charmed baryons $\Sigma_c$ and $\Lambda_c$ in a covariant quark-diquark model

    hep-ph 2026-07 conditional novelty 4.0 of 10

    Spacelike electromagnetic form factors of Σc and Λc are computed in a covariant quark-diquark model, finding compact charge distributions and a charm-quark-dominated magnetic form factor for Λc.

  2. Electroexcitation of Nucleon Resonances and the Emergence of Hadron Mass

    hep-ph 2025-05 conditional novelty 2.0 of 10

    A review argues that Jefferson Lab electroproduction data on nucleon resonances, analyzed with continuum Schwinger methods, confirm a momentum-dependent dressed quark mass, the essence of emergent hadron mass.

  3. The Self-energy of Nucleon in the Pseudovector Coupling Pion-nucleon System for the Electromagnetic Form Factor of Proton

    nucl-th 2019-06 unverdicted novelty 2.0 of 10

    Extends prior nucleon self-energy calculation with a non-perturbative correction to adjust the Q2 dependence of the proton electromagnetic form factor.

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