Document Type

Article

Publication Date

4-2012

DOI

10.1103/PhysRevLett.108.142001

Publication Title

Physical Review Letters

Volume

108

Issue

14

Pages

142001 (6pg.)

Abstract

We report on the first measurement of the F2 structure function of the neutron from the semi-inclusive scattering of electrons from deuterium, with low-momentum protons detected in the backward hemisphere. Restricting the momentum of the spectator protons to ≲ 100MeV/c and their angles to ≳ 100° relative to the momentum transfer allows an interpretation of the process in terms of scattering from nearly on-shell neutrons. The Fn2 data collected cover the nucleon-resonance and deep-inelastic regions over a wide range of Bjorken x for 0.65 < Q2 < 4.52 GeV2, with uncertainties from nuclear corrections estimated to be less than a few percent. These measurements provide the first determination of the neutron to proton structure function ratio Fn2/Fp2 at ≲ 0.2 ≲ x ≲ 0.8 with little uncertainty due to nuclear effects. 2012 American Physical Society.

Original Publication Citation

Baillie, N., Tkachenko, S., Zhang, J., Bosted, P., Bultmann, S., Christy, M. E., . . . Zhao, B. (2012). Measurement of the neutron F2 structure function via spectator tagging with CLAS. Physical Review Letters, 108(14), 142001. doi:10.1103/PhysRevLett.108.142001

ORCID

0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde), 0000-0001-5416-2900 (Weinstein)

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