Improved nuclear density model and the nuclear effect in P-A Drell-Yan process

Abstract

In this paper we present an improved nuclear density model. We have found the nuclear effect parameters’ formula RAV(x,Q2) and RAS(x,Q2) for the valence quark distribution and sea quark distribution in the nucleus, in which we have used the relation between the nuclear density and the mean binding energy in nucleus. By using the model, we can well explain the experimental data of the of Drell-Yan process in P-A.

Quark distributions in nuclei and nuclear effects on nucleon structure functions

“…These functions depending on phenomenological parameters were obtained by fit-ting experimental data on deep inelastic scattering. With these formulae, containing now a description of the nuclear effects in parametric form, the experimental data of the l -A DIS processes (for A 12) and the nuclear Drell-Yan processes (E772 Collaboration experimental data) could be well described [13,14] . Due to the restriction of the nuclear momentum conservation condition, a gloun distribution formula depending on a corresponding parameter was also proposed.…”

Effect of Nuclear Binding Energy to K Factor

“…[5] Some authors also get empirical rescale parameter formula of double Q rescale model by comparing empirical formula of nuclear binding energy with experiment data. [6] Therefore, it is significant for understanding reaction process deeply and checking rationality of all kinds of models to make the research of nuclear binding energy effect in Drell-Yan process.…”