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Article overview
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Evolution of the nucleon structure in the lightest nuclei | V.V.Burov
; A.V.Molochkov
; G.I.Smirnov
; | Date: |
19 Apr 1999 | Journal: | Phys.Lett. B466 (1999) 1-10 | Subject: | nucl-th | Abstract: | The evolution of the nucleon structure as a function of atomic mass A is considered for the first time for the lightest nuclei, D, 3H, 3He and 4He, with an approach based on the Bethe-Salpeter formalism. We show that the pattern of the oscillation of the structure functions ratio r^A(x) = F_2^A/F_2^N(D) varies with A by changing the position of the cross-over point x_3 in which r^A(x) = 1, unlike the pattern for nuclei with masses A larger than 4, where only the amplitude of the oscillation changes. In particular we find that the pattern of F_2(x) modifications is controlled with the values (1 - x_3) = 0.32 (D/N), 0.16 (3He/D) and 0.08 (4He/D). The obtained results follow from the relativistic consideration of the nuclear structure and allow us to define a whole class of modifications of the partonic distributions in the nucleon bound in a nucleus. The EMC effect is explained as a particular case of the considered class. | Source: | arXiv, nucl-th/9904050 | Services: | Forum | Review | PDF | Favorites |
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