The Nuclear Effects On Structure Function In The Deuteron

By experiment of deep inelastic scattering of polarized and non-polarized lepton on nucleon (nuclei), we can deeply research the inner structure of nuclear, and test the strong interaction theory - Quantum chromo dynamics. The EMC effect reflects that bound nucleon structure functions are different from those of free nucleon. After the discovery of the EMC effect, a large number of models revealed that the nuclear effects on distribution function in the nucleon can not be ignored. Deuteron usually is referenced to study the nuclear effects on distribution function in the nucleon. There fore, in term of learning the nuclear effects on deuteron structure function, we can make a better understanding of the nuclear effects on bound nucleon structure function to obtain the accurate parton distribution in bound nucleon.In this thesis, by adopting polarized parton distribution function in proton proposed by AAC, and parton distribution function in proton and the nuclear effects function of deuteron quark, sea quark given by M. Hirai et al, we calculate the non-polarized and polarized structure functions respectively. The results are compared with NMC and HERMES experimental data. For non-polarized deuteron structure function, over the region of x < 0.05, there is nuclear shadowing effect; over the region of 0 .07≤x≤0.35, there is nuclear anti-shadowing effect; when x=0.50, the calculation results of considering the nuclear effect are lower than those of non-considering, but the nuclear effect has little impact. Apart from the very small x region, the impact of nuclear effects on the structure function can be ignored. For deuteron polarized structure function, in the error range of experimental findings, there is little difference between considering the nuclear effect of deuteron and ignoring that.