Phys. Rev. Lett. 91, 142303 (2003) [4 pages]How to Reconcile the Rosenbluth and the Polarization Transfer Methods in the Measurement of the Proton Form FactorsReceived 1 June 2003; published 3 October 2003 The apparent discrepancy between the Rosenbluth and the polarization transfer methods for the ratio of the electric to magnetic proton form factors can be explained by a two-photon exchange correction which does not destroy the linearity of the Rosenbluth plot. Though intrinsically small, of the order of a few percent of the cross section, this correction is accidentally amplified in the case of the Rosenbluth method. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.142303
DOI:
10.1103/PhysRevLett.91.142303
PACS:
25.30.Bf, 13.40.Gp, 24.85.+p
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