A QCD-based explanation for changes in nucleon properties in nuclei

Quark mean-field theory and consistency with nuclear matter

“…(u, d ) quarks one has to split the potential into a vector and a scalar part arbitrarily to take care of the chiral symmetry breaking [7]. An alternative has been tried recently by Dey et al [20], where forms are m, """(x ) = -4~'x'(4%'), (10) where (%%)=( -2S5 MeV) and the Eq. (10) [17]).…”

“…This results in changes in the nucleon property, for example, in the increase in the radius expected from the European Muon Collaboration experimental data through rescaling (Close, Roberts, and Ross [6]). In the formalism of relativistic Hartree-Fock theory (Dey, Dey, and Le Tourneux [7]),justified by the large N, theory of t'Hooft [8) and Witten [9], one gets a weakening of the confinement (Dey et al [10]) at higher density. If one uses the potential due to Richardson [11], this means a decrease in A, the only parameter present in the interaction.…”