Direct observation of quark-hadron duality in the free neutron F2 structure function

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.

doi:10.1103/PhysRevC.91.055206

Title: Direct observation of quark-hadron duality in the free neutron $F_{2}$ structure function

Journal Article · Thu May 21 00:00:00 EDT 2015 · Physical Review C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.91.055206· OSTI ID:1182365

Niculescu, I. ^[1]; Niculescu, G. ^[1]; Melnitchouk, W. ^[2]; Arrington, J. ^[3]; Christy, M. E. ^[4]; Ent, R. ^[2]; Griffioen, K. A. ^[5]; Kalantarians, N. ^[4]; Keppel, C. E. ^[2]; Kuhn, S. ^[6]; Tkachenko, S. ^[7]; Zhang, J. ^[7]

James Madison Univ., Harrisonburg, VA (United States)
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Hampton Univ., Hampton, VA (United States)
College of William and Mary, Williamsburg, VA (United States)
Old Dominion Univ., Norfolk, VA (United States)
Univ. of Virginia, Charlottesville, VA (United States)

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.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: PHY-1307196; PHY-1002644; AC05-06OR23177; FG02-96ER40960; AC02-06CH11357; FG02-97ER41025; FG02-96ER41003

OSTI ID:: 1182365

Journal Information:: Physical Review C, Nuclear Physics, Vol. 91, Issue 5; ISSN 0556-2813

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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