Improved Partou Evolution Model and Its Explanation to the EMC Effect and the Nuclear Drell-Yan Process

Yu Mingjian; Shen Jianping; Li Guanglie; Yang Jianjun; Shen Hongqing

Chinese Physics C> 1994, Vol. 18> Issue(12) : 1107-1114

Improved Partou Evolution Model and Its Explanation to the EMC Effect and the Nuclear Drell-Yan Process

Institutee of High Energy Physics,Asademia Sinica,Beijing 1000391 Nanjing Normal University,Nanjing 210024

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Abstract：
In this paper,we prove analytically that the parton evolution model can provide a physical basis to the double x-rescaling model. Then we describe the nuclear shadowing and antishadowing effect in the small x region using the modified Alteralli-Parisi equation to improve the parton evolution model.The unified description of the EMC effect,the nuclear shadowing effect,and antishadowing effect is given without introducing the nuclear shadowing factor.Finally,we explain the experimental data of the Drell-Yan process with the improved parton evolution model.

References

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G.L.Li,Z.J.Cao and C.S.Zhong.Nucl.Phys.A509（1990）757.[2]W.Zhu and J.G.Shen,Phys.Lett,235B（1990）170.[3]F.E.Close and R.G.Roberts,Phys.Lett,213B（1988）91.[4]EMC,J.Ashman et al.CERN-PPE/92-155（1992）.[5]J.J.Yang et al,High Energy Physics and Nuclear Physics（Allerton Press,Inc./New York）15（1991）197;J.J.Yang et al,Can.J.Phys.70（1992）114.[6]J.Qiu,Nucl.Phys,B291（1987）746.[7]P.Amaudruz et al.Z.Phys.C51（1991）387.[8]J.G.Morfin and W.K.Tung,Z.Phys,C52（1991）13.[9]D.M.Adle et al,Phys.Rev.Lett.44（1990）2479.

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Yu Mingjian, Shen Jianping, Li Guanglie, Yang Jianjun and Shen Hongqing. Improved Partou Evolution Model and Its Explanation to the EMC Effect and the Nuclear Drell-Yan Process[J]. Chinese Physics C, 1994, 18(12): 1107-1114.

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Improved Partou Evolution Model and Its Explanation to the EMC Effect and the Nuclear Drell-Yan Process

Corresponding author: Yu Mingjian,

Institutee of High Energy Physics,Asademia Sinica,Beijing 1000391 Nanjing Normal University,Nanjing 210024

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1994-12-05

Abstract: In this paper,we prove analytically that the parton evolution model can provide a physical basis to the double x-rescaling model. Then we describe the nuclear shadowing and antishadowing effect in the small x region using the modified Alteralli-Parisi equation to improve the parton evolution model.The unified description of the EMC effect,the nuclear shadowing effect,and antishadowing effect is given without introducing the nuclear shadowing factor.Finally,we explain the experimental data of the Drell-Yan process with the improved parton evolution model.