Skip to Main content Skip to Navigation
Journal articles

$G_{E_p}/G_{M_p}$ ratio by polarization transfer in $\vec{e}p\rightarrow e\vec{p}$

Abstract : The ratio of the proton's elastic electromagnetic form factors was obtained by measuring the transverse and longitudinal polarizations of recoiling protons from the elastic scattering of polarized electrons with unpolarized protons. The ratio of the electric to magnetic form factor is proportional to the ratio of the transverse to longitudinal recoil polarizations. The ratio was measured over a range of four-momentum transfer squared between 0.5 and 3.5 GeV-squared. Simultaneous measurement of transverse and longitudinal polarizations in a polarimeter provides good control of the systematic uncertainty. The results for the ratio of the proton's electric to magnetic form factors show a systematic decrease with increasing four momentum squared, indicating for the first time a marked difference in the spatial distribution of charge and magnetization currents in the proton.
Document type :
Journal articles
Complete list of metadatas

Cited literature [14 references]  Display  Hide  Download

http://hal.in2p3.fr/in2p3-00009685
Contributor : Michèle Chadelas <>
Submitted on : Tuesday, February 15, 2000 - 1:55:17 PM
Last modification on : Thursday, November 19, 2020 - 12:58:33 PM
Long-term archiving on: : Tuesday, March 30, 2010 - 5:19:41 PM

Identifiers

  • HAL Id : in2p3-00009685, version 1

Collections

Citation

M.K. Jones, K.A. Aniol, F.T. Baker, J. Berthot, P.Y. Bertin, et al.. $G_{E_p}/G_{M_p}$ ratio by polarization transfer in $\vec{e}p\rightarrow e\vec{p}$. Physical Review Letters, American Physical Society, 2000, 84, pp.1398-1402. ⟨in2p3-00009685⟩

Share

Metrics

Record views

470

Files downloads

1625