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

G.I. Smirnov

doi:doi:10.1007/s100529900107

EPJ

a
b
c
d
e
ap
st
h
plus
ds
pv
ti
qt
am
n

2022 Impact factor 4.4

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

Abstract
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 r^A(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 x_i, i= 1-3 in which r^A(x)= 1 independently of A. In the range x > 0.7 the pattern of r^A(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.