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Title: Iterative Monte Carlo analysis of spin-dependent parton distributions

Abstract

We present a comprehensive new global QCD analysis of polarized inclusive deep-inelastic scattering, including the latest high-precision data on longitudinal and transverse polarization asymmetries from Jefferson Lab and elsewhere. The analysis is performed using a new iterative Monte Carlo fitting technique which generates stable fits to polarized parton distribution functions (PDFs) with statistically rigorous uncertainties. Inclusion of the Jefferson Lab data leads to a reduction in the PDF errors for the valence and sea quarks, as well as in the gluon polarization uncertainty at x ≳ 0.1. Furthermore, the study also provides the first determination of the flavor-separated twist-3 PDFs and the d 2 moment of the nucleon within a global PDF analysis.

Authors:
 [1];  [1];  [2];  [3];  [4]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. Old Dominion Univ., Norfolk, VA (United States)
  3. College of William and Mary, Williamsburg, VA (United States)
  4. Hampton Univ., Hampton, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
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) (SC-26)
Contributing Org.:
Jefferson Lab Angular Momentum Collaboration
OSTI Identifier:
1245545
Alternate Identifier(s):
OSTI ID: 1245634
Report Number(s):
JLAB-THY-16-2200; DOE/OR/23177-3649; arXiv:1601.07782
Journal ID: ISSN 2470-0010; PRVDAQ
Grant/Contract Number:  
AC05-06OR23177; SC008791; FG02-96ER40960; SC0006758
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Sato, Nobuo, Melnitchouk, Wally, Kuhn, Sebastian E., Ethier, Jacob J., and Accardi, Alberto. Iterative Monte Carlo analysis of spin-dependent parton distributions. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.074005.
Sato, Nobuo, Melnitchouk, Wally, Kuhn, Sebastian E., Ethier, Jacob J., & Accardi, Alberto. Iterative Monte Carlo analysis of spin-dependent parton distributions. United States. doi:10.1103/PhysRevD.93.074005.
Sato, Nobuo, Melnitchouk, Wally, Kuhn, Sebastian E., Ethier, Jacob J., and Accardi, Alberto. Tue . "Iterative Monte Carlo analysis of spin-dependent parton distributions". United States. doi:10.1103/PhysRevD.93.074005. https://www.osti.gov/servlets/purl/1245545.
@article{osti_1245545,
title = {Iterative Monte Carlo analysis of spin-dependent parton distributions},
author = {Sato, Nobuo and Melnitchouk, Wally and Kuhn, Sebastian E. and Ethier, Jacob J. and Accardi, Alberto},
abstractNote = {We present a comprehensive new global QCD analysis of polarized inclusive deep-inelastic scattering, including the latest high-precision data on longitudinal and transverse polarization asymmetries from Jefferson Lab and elsewhere. The analysis is performed using a new iterative Monte Carlo fitting technique which generates stable fits to polarized parton distribution functions (PDFs) with statistically rigorous uncertainties. Inclusion of the Jefferson Lab data leads to a reduction in the PDF errors for the valence and sea quarks, as well as in the gluon polarization uncertainty at x ≳ 0.1. Furthermore, the study also provides the first determination of the flavor-separated twist-3 PDFs and the d2 moment of the nucleon within a global PDF analysis.},
doi = {10.1103/PhysRevD.93.074005},
journal = {Physical Review D},
number = 7,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}

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Cited by: 23 works
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    Works referencing / citing this record:

    The spin structure of the nucleon
    journal, June 2019

    • Deur, Alexandre; Brodsky, Stanley J.; de Téramond, Guy F.
    • Reports on Progress in Physics, Vol. 82, Issue 7
    • DOI: 10.1088/1361-6633/ab0b8f

    The spin structure of the nucleon
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    • Deur, Alexandre; Brodsky, Stanley J.; de Téramond, Guy F.
    • Reports on Progress in Physics, Vol. 82, Issue 7
    • DOI: 10.1088/1361-6633/ab0b8f