Measurement of the neutron F2 structure function via spectator tagging with CLAS
Collaboration
6 pages
Published in:
- Phys.Rev.Lett. 108 (2012) 142001,
- Phys.Rev.Lett. 108 (2012) 199902 (erratum)
e-Print:
- 1110.2770 [nucl-ex]
Report number:
- JLAB-PHY-11-1427
Citations per year
Abstract: (arXiv)
We report on the first measurement of the F2 structure function of the neutron from semi-inclusive scattering of electrons from deuterium, with low-momentum protons detected in the backward hemisphere. Restricting the momentum of the spectator protons to < 100 MeV and their angles to < 100 degrees relative to the momentum transfer allows an interpretation of the process in terms of scattering from nearly on-shell neutrons. The F2n data collected cover the nucleon resonance and deep-inelastic regions over a wide range of Bjorken x for 0.65 < Q2 < 4.52 GeV2, with uncertainties from nuclear corrections estimated to be less than a few percent. These measurements provide the first determination of the neutron to proton structure function ratio F2n/F2p at 0.2 < x < 0.8 with little uncertainty due to nuclear effects.Note:
- 6 pages, 3 pages
- 13.60.Hb
- 14.20.Dh
- p: structure function
- n: structure function
- structure function: ratio
- p: spectator
- electron deuteron: semi-inclusive reaction
- momentum transfer dependence
- CLAS
- x-dependence
References(0)
Figures(6)
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