1995/12/01 by G.I. Smirnov, G. I. Smirnov · 1 citation
Physics and Astronomy · #Deep inelastic scattering #Distribution function #EMC effect #High-Energy Particle Collisions Research #Nuclear structure #Particle physics theoretical and experimental studies #Parton #Quantum Chromodynamics and Particle Interactions #Scattering #Structure function #Universality (dynamical systems) #hep-ph
paper · pdf · doi:10.1016/0370-2693(95)01357-8
published as Phys.Lett. B364 (1995) 87-92 · 11 pages (LaTeX) and 4 Postscript figures in uuencoded compressed file
openalex publication_date 1995/12/01 · arxiv created 1995/12/05 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
It is shown that the latest results from the NMC (CERN) and E665 (Fermilab) groups on F2A(x)/F2D(x) obtained in the shadowing region bring new evidence of the universal A dependence of distortions made in a free-nucleon structure function by a nuclear medium. The observed universality implies that one can consider separately hard (A≤ 4) and soft (A> 4) parton distribution distortions. Soft distortions, which result in differencies between the deep-inelastic scattering cross-sections for nuclei with masses A1, A2 ≥ 4, can be explained as a consequence of the nuclear density variation, independent of x in the range 0.001 ≤ x ≤ 0.7. It is found that nuclear shadowing begins at x\rm I = 0.0615 ± 0.0024, independent of A, which is consistent with models that allow for three-parton recombination processes.