Deep inelastic scattering from A =3 nuclei and the neutron structure function
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(Published version)
Date
2003
Authors
Afnan, I.
Bissey, F.
Gomez, J.
Katramatou, A.
Liuti, S.
Melnitchouk, W.
Petratos, G.
Thomas, A.
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Physical Review C: Nuclear Physics, 2003; 68(3):035201-1-035201-17
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I. R. Afnan, F. Bissey, J. Gomez, A. T. Katramatou, S. Liuti, W. Melnitchouk, G. G. Petratos, and A. W. Thomas
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Abstract
We present a comprehensive analysis of deep inelastic scattering from ³He and ³H, focusing in particular on the extraction of the free neutron structure function F₂n. Nuclear corrections are shown to cancel to within 1–2% for the isospin-weighted ratio of ³He to ³H structure functions, which leads to more than an order of magnitude improvement in the current uncertainty in the neutron to proton ratio ₂2n/F₂p at large x. Theoretical uncertainties originating from the nuclear wave function, including possible non-nucleonic components, are evaluated. Measurements of the ³He and ³H structure functions will, in addition, determine the magnitude of the EMC effect in all A<~3 nuclei.
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©2003 American Physical Society