Document Type

Article

Publication Date

2014

DOI

10.1088/1742-6596/543/1/012007

Publication Title

Journal of Physics: Conference Series

Volume

543

Pages

012007 (1-9)

Abstract

The neutron's deep-inelastic structure functions provide essential information for the flavor separation of the nucleon parton densities, the nucleon spin decomposition, and precision studies of QCD phenomena in the flavor-singlet and nonsinglet sectors. Traditional inclusive measurements on nuclear targets are limited by dilution from scattering on protons, Fermi motion and binding effects, final-state interactions, and nuclear shadowing at x ≪ 0.1. An Electron-Ion Collider (EIC) would enable next-generation measurements of neutron structure with polarized deuteron beams and detection of forward-moving spectator protons over a wide range of recoil momenta (0 < pR < several 100MeV in the nucleus rest frame). The free neutron structure functions could be obtained by extrapolating the measured recoil momentum distributions to the on-shell point. The method eliminates nuclear modifications and can be applied to polarized scattering, as well as to semi-inclusive and exclusive final states. We review the prospects for neutron structure measurements with spectator tagging at EIC, the status of R&D efforts, and the accelerator and detector requirements.

Comments

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Original Publication Citation

Cosyn, W., Guzey, V., Higinbotham, D. W., Hyde, C., Kuhn, S., Nadel-Turonski, P., . . . Weiss, C. (2014). Neutron spin structure with polarized deuterons and spectator proton tagging at EIC. Journal of Physics: Conference Series, 543, 012007. doi:10.1088/1742-6596/543/1/012007

ORCID

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

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