2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 10, 239-247
DOI 10.1007/s100529900107

Determination of the pattern of nuclear binding
from the data on lepton-nucleus deep inelastic scattering

G.I. Smirnov

Joint Institute for Nuclear Research, Dubna, Russia (G.Smirnov@cern.ch)

Received: 28 January 1999 / Revised version: 1 April 1999 / Published online: 3 August 1999

Nucleon structure function ratios $r^A(x) = F_2^A(x)/F_2^{\mathrm
{D}}(x)$measured in the range of atomic masses $A \geq 4 $are analyzed with the aim of determining the pattern of the x and A dependence of F2(x) modifications caused by the nuclear environment. It is found that the x and A dependence of the deviations of the rA(x) from unity can be factorized in the entire range of x. The characteristic feature of the factorization is represented with the three cross-over points xi, i= 1-3 in which rA(x)= 1 independently of A. In the range x > 0.7 the pattern of rA(x) is fixed with $x_3 = 0.84 \pm 0.01$.The pattern of the x dependence is compared with theoretical calculations of Burov, Molochkov and Smirnov to demonstrate that the evolution of the nucleon structure as a function of A occurs in two stages: first for $A \leq 4$ and second for A > 4. The long-standing problem of the origin of the EMC effect is understood as a modification of the nucleon structure in the field responsible for the binding forces in a three-nucleon system.

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