Measurement of the neutron electric form factor GE,n in the quasifree 2H(e→,e′n→)p reaction
- Ostrick, M.
- Herberg, C.
- Andresen, H. G.
- Annand, J. R. M.
- Aulenbacher, K.
- Becker, J.
- Drescher, P.
- Eyl, D.
- Frey, A.
- Grabmayr, P.
- Hartmann, P.
- Hehl, T.
- Heil, W.
- Hoffmann, J.
- Ireland, D.
- Kellie, J. D.
- Klein, F.
- Livingston, K.
- Nachtigall, Ch.
- Natter, A.
- Otten, E. W.
- Owens, R. O.
- Reichert, E.
- Rohe, D.
- Schmieden, H.
- Sprengard, R.
- Steigerwald, M.
- Steffens, K.-H.
- Walcher, Th.
- Watson, R.
DOIAbstract
The electric form factor of the neutron G E , n has been measured in the quasifree 2 H ( → e , e ′ → n ) p reaction using the 855 MeV polarized cw electron beam of the Mainz Microtron MAMI. The polarization of the scattered neutrons was analyzed in a polarimeter consisting of two walls of plastic scintillators. The precession of the neutron spin in a magnetic field was used for the first time to circumvent the measurement of the effective analyzing power of the polarimeter and the beam polarization. In this way G E , n could be determined with little model dependence and experimental uncertainties. The result G E , n ( 0.34 GeV 2 / c 2 ) = 0.0611 ± 0.0069 stat ( { + 0.0069 } { − 0.0055 ...
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