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Title: Polarized light ions and spectator nucleon tagging at EIC

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 ll 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 < p(R) < 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.

Authors:
 [1];  [2];  [3];  [2];  [3];  [4];  [5];  [2]
  1. Petersburg Nuclear Physics Institute, Gatchina, 188300, Russia
  2. JLAB
  3. Old Dominion University, Norfolk, VA 23529, USA
  4. Florida International University, Miami, FL 33199, USA
  5. Pennsylvania State University, University Park, PA 16802, USA
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1163952
Report Number(s):
JLAB-THY-14-1913; arXiv:1407.3236; DOE/OR/23177-3126
R&D Project: 2013-LDRD-07
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Conference
Journal Name:
Proceedings of Science
Additional Journal Information:
Journal Volume: DIS; Journal Issue: 2014; Conference: DIS 2014, 28 Apr - 2 May 2014. Warsaw, Poland
Country of Publication:
United States
Language:
English

Citation Formats

Guzey, Vadim, Higinbotham, Dougas W., Hyde, Charles, Nadel-Turonski, Pawel A., Park, Kijun, Sargsian, Misak M., Strikman, Mark, and Weiss, Christian. Polarized light ions and spectator nucleon tagging at EIC. United States: N. p., 2014. Web.
Guzey, Vadim, Higinbotham, Dougas W., Hyde, Charles, Nadel-Turonski, Pawel A., Park, Kijun, Sargsian, Misak M., Strikman, Mark, & Weiss, Christian. Polarized light ions and spectator nucleon tagging at EIC. United States.
Guzey, Vadim, Higinbotham, Dougas W., Hyde, Charles, Nadel-Turonski, Pawel A., Park, Kijun, Sargsian, Misak M., Strikman, Mark, and Weiss, Christian. 2014. "Polarized light ions and spectator nucleon tagging at EIC". United States. https://www.osti.gov/servlets/purl/1163952.
@article{osti_1163952,
title = {Polarized light ions and spectator nucleon tagging at EIC},
author = {Guzey, Vadim and Higinbotham, Dougas W. and Hyde, Charles and Nadel-Turonski, Pawel A. and Park, Kijun and Sargsian, Misak M. and Strikman, Mark and Weiss, Christian},
abstractNote = {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 ll 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 < p(R) < 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.},
doi = {},
url = {https://www.osti.gov/biblio/1163952}, journal = {Proceedings of Science},
number = 2014,
volume = DIS,
place = {United States},
year = {Wed Oct 01 00:00:00 EDT 2014},
month = {Wed Oct 01 00:00:00 EDT 2014}
}

Conference:
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