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Title: Direct observation of quark-hadron duality in the free neutron F 2 structure function

Abstract

Using data from the recent BONuS experiment at Jefferson Lab, which utilized a novel spectator tagging technique to extract the inclusive electron-free neutron scattering cross section, we obtain the first direct observation of quark-hadron duality in the neutron F 2 structure function. In addition, the data are used to reconstruct the lowest few (N = 2, 4 and 6) moments of F 2 in the three prominent nucleon resonance regions, as well as the moments integrated over the entire resonance region. Comparison with moments computed from global parametrizations of parton distribution functions suggest that quark--hadron duality holds locally for the neutron in the second and third resonance regions down to Q 2 ≈ 1 GeV 2, with violations possibly up to 20% observed in the first resonance region.

Authors:
 [1];  [1];  [2];  [3];  [4];  [2];  [5];  [4];  [2];  [6];  [7];  [7]
  1. James Madison Univ., Harrisonburg, VA (United States)
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Hampton Univ., Hampton, VA (United States)
  5. College of William and Mary, Williamsburg, VA (United States)
  6. Old Dominion Univ., Norfolk, VA (United States)
  7. Univ. of Virginia, Charlottesville, VA (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1182365
DOE Contract Number:  
PHY-1307196; PHY-1002644; AC05-06OR23177; FG02-96ER40960; AC02-06CH11357; FG02-97ER41025; FG02-96ER41003
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 91; Journal Issue: 5; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Niculescu, I., Niculescu, G., Melnitchouk, W., Arrington, J., Christy, M. E., Ent, R., Griffioen, K. A., Kalantarians, N., Keppel, C. E., Kuhn, S., Tkachenko, S., and Zhang, J. Direct observation of quark-hadron duality in the free neutron F2 structure function. United States: N. p., 2015. Web. doi:10.1103/PhysRevC.91.055206.
Niculescu, I., Niculescu, G., Melnitchouk, W., Arrington, J., Christy, M. E., Ent, R., Griffioen, K. A., Kalantarians, N., Keppel, C. E., Kuhn, S., Tkachenko, S., & Zhang, J. Direct observation of quark-hadron duality in the free neutron F2 structure function. United States. doi:10.1103/PhysRevC.91.055206.
Niculescu, I., Niculescu, G., Melnitchouk, W., Arrington, J., Christy, M. E., Ent, R., Griffioen, K. A., Kalantarians, N., Keppel, C. E., Kuhn, S., Tkachenko, S., and Zhang, J. Thu . "Direct observation of quark-hadron duality in the free neutron F2 structure function". United States. doi:10.1103/PhysRevC.91.055206. https://www.osti.gov/servlets/purl/1182365.
@article{osti_1182365,
title = {Direct observation of quark-hadron duality in the free neutron F2 structure function},
author = {Niculescu, I. and Niculescu, G. and Melnitchouk, W. and Arrington, J. and Christy, M. E. and Ent, R. and Griffioen, K. A. and Kalantarians, N. and Keppel, C. E. and Kuhn, S. and Tkachenko, S. and Zhang, J.},
abstractNote = {Using data from the recent BONuS experiment at Jefferson Lab, which utilized a novel spectator tagging technique to extract the inclusive electron-free neutron scattering cross section, we obtain the first direct observation of quark-hadron duality in the neutron F2 structure function. In addition, the data are used to reconstruct the lowest few (N = 2, 4 and 6) moments of F2 in the three prominent nucleon resonance regions, as well as the moments integrated over the entire resonance region. Comparison with moments computed from global parametrizations of parton distribution functions suggest that quark--hadron duality holds locally for the neutron in the second and third resonance regions down to Q2 ≈ 1 GeV2, with violations possibly up to 20% observed in the first resonance region.},
doi = {10.1103/PhysRevC.91.055206},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 91,
place = {United States},
year = {2015},
month = {5}
}