Measurement of the Proton’s Electric to Magnetic Form Factor Ratio from H1(e,ep)

C. B. Crawford et al.
Phys. Rev. Lett. 98, 052301 – Published 30 January 2007

Abstract

We report the first precision measurement of the proton electric to magnetic form factor ratio from spin-dependent elastic scattering of longitudinally polarized electrons from a polarized hydrogen internal gas target. The measurement was performed at the MIT-Bates South Hall Ring over a range of four-momentum transfer squared Q2 from 0.15 to 0.65(GeV/c)2. Significantly improved results on the proton electric and magnetic form factors are obtained in combination with existing cross-section data on elastic electron-proton scattering in the same Q2 region.

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  • Received 7 September 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.052301

©2007 American Physical Society

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Vol. 98, Iss. 5 — 2 February 2007

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