Deuteron Structure Function Of The Nuclear Effects

The interaction and momentum distribution of quark-gluon in the nucleon are learned through the high energy lepton-nucleon(nuclei) deep inelastic scattering process. So the experimental results can be better explained from the future colliders. The EMC effect reflects that the bound nucleon structure function is different from that in free nucleon., i.e the nuclear parton distributions are different ftom those in proton. After the discovery of the EMC effect, many models are used to study the nuclear effects for the structure functions. In 1996, Xue Dali and Li Guanglie et al. proposed the leakage and overlap of the partons inside nucleon model to explain the nuclear effects of the structure function. In this model ,the nucleon effective mass can be successfully used as the only free parameter to calculate the parton distribution functions of bound nucleon. The calculated results from the model are well in agreement with the experimental data.In order to study the difference between the structure functions of free nucleon and bound nucleon, the nuclear structure function ratios is often used, where represent the deuteron structure function. Because the bind energy of deuteron is very small, the deuteron structure function is often assumed the same as that in the free nucleon. In fact, the nuclear effect in the deuteron structure function is not negligible. There fore, it is necessary to study the deuteron structure function. By using the leakage and overlap of the partons inside nucleon model, the deuteron structure functions are calculated. The theoretical results are consistent with NMC experimental data .