[Duan, C. G.
; Liu, N.] Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China
; [Duan, C. G.] Hebei Adv Thin Films Lab, Shijiazhuang 050016, Peoples R China
; [Liu, N.] Shijiazhuang Univ Econ, Coll Math & Phys, Shijiazhuang 050031, Peoples R China
; [Li, G. L.] Nanjing Xiaozhuang Univ, Dept Phys, Nanjing 210017, Peoples R China
; [Li, G. L.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
By means of two different parametrizations of quark energy loss and the nuclear parton distributions determined only with lepton-nuclear deep inelastic scattering experimental data, a leading order phenomenological analysis is performed on the nuclear Drell-Yan differential cross section ratios for E772 experimental data. Uncertainty due to the quark energy loss effect is quantified in determining the nuclear sea quark distribution by using nuclear Drell-Yan data. It is found that the quark energy loss effect on nuclear Drell-Yan cross section ratios becomes greater with the increase of quark momentum fraction in the target nuclei. The uncertainty from the quark energy loss becomes bigger as the nucleus A becomes heavier. The Drell-Yan data on proton incident middle and heavy nuclei versus deuterium would result in an overestimate for nuclear modification in the sea quark distribution with neglecting the quark energy loss.