APS » PROLA » Phys. Rev. C » Volume 64 » Issue 3

Phys. Rev. C 64, 038202 (2001) [4 pages]

Measurements of the elastic electromagnetic form factor ratio μpGEp/GMp via polarization transfer
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O. Gayou et al. (The Jefferson Lab Hall A Collaboration)
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Received 29 May 2001; published 21 August 2001

We present measurements of the ratio of the proton elastic electromagnetic form factors, μpGEp/GMp. The Jefferson Lab Hall A Focal Plane Polarimeter was used to determine the longitudinal and transverse components of the recoil proton polarization in ep elastic scattering; the ratio of these polarization components is proportional to the ratio of the two form factors. These data reproduce the observation of Jones et al. [Phys. Rev. Lett. 84, 1398 (2000)], that the form factor ratio decreases significantly from unity above Q2=1 GeV2.


©2001 The American Physical Society

URL: http://link.aps.org/abstract/PRC/v64/e038202
DOI: 10.1103/PhysRevC.64.038202
PACS: 14.20.Dh, 13.40.Gp, 25.30.Bf, 24.70.+s

* Corresponding author. Electronic address: gilman@jlab.org
† Present address: St. Mary’s University, Halifax, Nova Scotia, Canada B3H 3C3.

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