x- and xi-scaling of the Nuclear Structure Function at Large x

Details x- and xi-scaling of the Nuclear Structure Function at Large x x- and xi-scaling of the Nuclear Structure Function at Large x

2001-02-08

arxiv.org/abs/nucl-ex/0102004v1

Phys.Rev.C64:014602,2001

Physics

Nuclear Physics

Nuclear Experiment

RevTeX, 5 pages with 4 postscript figures, submitted to PRC

Scientific paper

10.1103/PhysRevC.64.014602

Inclusive electron scattering data are presented for ^2H and Fe targets at an incident electron energy of 4.045 GeV for a range of momentum transfers from Q^2 = 1 to 7 (GeV/c)^2. Data were taken at Jefferson Laboratory for low values of energy loss, corresponding to values of Bjorken x greater than or near 1. The structure functions do not show scaling in x in this range, where inelastic scattering is not expected to dominate the cross section. The data do show scaling, however, in the Nachtmann variable \xi. This scaling may be the result of Bloom Gilman duality in the nucleon structure function combined with the Fermi motion of the nucleons in the nucleus. The resulting extension of scaling to larger values of \xi opens up the possibility of accessing nuclear structure functions in the high-x region at lower values of Q^2 than previously believed.

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