Affection of QCD Non-Perturbation and Energy Loss Effect to the Quark Distributions
- Received Date: 2003-12-01
- Accepted Date: 1900-01-01
- Available Online: 2004-07-05
Abstract: For investigating physical mechanism of the quark distributions due to the nuclear environment under the non-constant K condition the nuclear medium effect on the distribution functions of the sea and valence quarks R Av(x2) RAs(x2) is computed by considering QCD non-perturbation effect in the DIS process and energy loss effect in the nuclear Drell-Yan process. Calculated results show that non-perturbative terms or energy loss effect terms have a tiny influence on the nuclear medium effect on the sea quark distribution in the small x2 region, while a strong influence on the valence quark's. However in the large x2 region, the non-perturbative or energy loss effects obviously affect the nuclear medium effect on the sea quark distribution.