2018 Impact factor 2.481
Hadrons and Nuclei
Eur. Phys. J. A 5, 131-135

Short note

Determination of the neutron electric form factor in the $D(\vec{e},e^{\prime}\vec{n})p$ reaction and the influence of nuclear binding

C. Herberg1 - M. Ostrick1 - H.G. Andresen1 - J.R.M. Annand2 - K. Aulenbacher1 - J. Becker3 - P. Drescher3 - D. Eyl1 - A. Frey1 - P. Grabmayr4 - S.J. Hall2 - P. Hartmann1 - T. Hehl4 - W. Heil3 - J. Hoffmann3 - D. Ireland2 - J.D. Kellie2 - F. Klein5 - K. Livingston2 - Ch. Nachtigall3 - A. Natter4 - E.W. Otten3 - R.O. Owens2 - E. Reichert3 - D. Rohe3 - H. Schmieden1 - R. Sprengard1 - M. Steigerwald3 - K.-H. Steffens1 - Th. Walcher1 - R. Watson2

1 Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany
2 Department of Physics and Astronomy, University of Glasgow, Glasgow, UK
3 Institut für Physik, Universität Mainz, D-55099 Mainz, Germany
4 Physikalisches Institut, Universität Tübingen, D-72076 Tübingen, Germany
5 Physikalisches Institut, Universität Bonn, D-53115 Bonn, Germany

Received: 12 April 1999 Communicated by B. Povh

Abstract
The electric form factor of the neutron GE,n has been determined at the Mainz Microtron MAMI at the low momentum transfer $Q^{2}=0.15 \,{(GeV/c)}^{2}$ in a measurement of the recoil polarisation ratio Px/Pz in the quasifree reaction $D(\vec{e},e^{\prime}\vec{n})p$. At this Q2 the influence of the nuclear binding is strong. A purely kinematical model is used to get some insight into the effect of the initial Fermi momentum distribution of the neutron. The influence of the final state interaction is determined quantitatively by a model of Arenhövel et al.. After the corresponding corrections a value of $G_{E,n}(0.15\,{(GeV/c)}^{2}) = 0.0481 \pm0.0065_{stat}
 \pm0.0053_{syst}$ is obtained.

PACS
25.30.Fj Nuclear Reactions: Inelastic electron scattering to continuum - 14.20.Dh Properties of Specific Particles: Protons and neutrons - 13.40.Gp Electromagnetic form factors - 25.10.+s Nuclear reactions involving few-nucleon systems


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