skip to main content

This content will become publicly available on May 21, 2016

Title: Direct Observation of Quark-Hadron Duality in the Free Neutron {ital F}{sub 2} Structure Function

Using the recently published data from the BONuS(Barely Off-shell Nucleon Structure) experiment at Jefferson Lab, which utilized a 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. 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) approximate to 1 GeV2, with violations possibly up to 20% observed in the first resonance region.
 [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:
OSTI Identifier:
Grant/Contract Number:
AC02-06CH11357; AC05-06OR23177; FG02-96ER40960; FG02-97ER41025; FG02-96ER41003
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 91; Journal Issue: 5; Journal ID: ISSN 0556-2813
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States