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S. Rock; R. G. Arnold; P. Bosted; B. T. Chertok; B. A. Mecking; I. Schmidt; Z. M. Szalata; R. C. York; R. Zdarko

doi:10.1103/PhysRevLett.49.1139

Measurement of Elastic Electron-Neutron Cross Sections up to $Q^{2} = 10$ ${(G e V / c)}^{2}$

S. Rock, R. G. Arnold, P. Bosted, B. T. Chertok, B. A. Mecking, I. Schmidt, Z. M. Szalata, R. C. York, and R. Zdarko

Phys. Rev. Lett. 49, 1139 – Published 18 October 1982

Abstract

The elastic electron-neutron cross section has been measured at four-momentum transfers squared ( $Q^{2}$ ) of 2.5, 4.0, 6.0, 8.0, and 10.0 ${(G e V / c)}^{2}$ with use of a deuterium target and detection of the scattered electrons at 10°. The ratio of neutron to proton elastic cross sections decreases with $Q^{2}$ . At high $Q^{2}$ this trend is inconsistent with the dipole law, form-factor scaling, and many vector dominance models, although it is consistent with some parton models.

Received 7 September 1982

DOI:https://doi.org/10.1103/PhysRevLett.49.1139

Authors & Affiliations

S. Rock, R. G. Arnold, P. Bosted, B. T. Chertok^*, B. A. Mecking^†, I. Schmidt^‡, Z. M. Szalata, R. C. York^§, and R. Zdarko

Department of Physics, The American University, Washington, D.C. 20016, and Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305

^*Deceased.
^†On leave from Universität Bonn, Bonn, West Germany.
^‡Present address: University of Santiago, Santiago, Chile.
^§Present address: University of Virginia, Charlottesville, Va. 22903.