Document Type

Article

Publication Date

2012

DOI

10.1103/PhysRevC.85.035208

Publication Title

Physical Review C

Volume

85

Issue

3

Pages

035208 (1-15)

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 ≲ 100  MeV/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 2, 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.

Comments

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© 2012 American Physical Society

Original Publication Citation

Collaboration, C., Park, K., Gothe, R. W., Adhikari, K. P., Adikaram, D., Anghinolfi, M., . . . Zhao, Z. W. (2012). Measurement of the generalized form factors near threshold via ˠ*p→nπ+ at high Q². Physical Review C, 85(3), 035208. doi:10.1103/PhysRevC.85.035208

ORCID

0000-0001-7282-8120 (Hyde), 0000-0003-2243-6836 (Kuhn)

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