Chinese Physics C > 1997, Vol. 21 > Issue(6): 548-553

Improved Q²-Rescaling Model and the Nuclear Effect of Parton Distribution Functions

Department of Physics,Hebei Teacher's University,Shijiazhuang 0500162 Institute of Energy Physics,The Chinese Acadenty of Sciences,Beijing 1000393 Department of Physics,Peking University,Beijing 10087

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Abstract：
Considering that the original Q ²-rescaling model has some shortcomings in explaining the experimental data,we propose animproved Q ²-rescaling model in which,in order to compensate for the loss of nuclear momentum,we employ different Q ²-rescaling parameters for momentum distributions of valence quark,sea quark and glouns.By using improved Q ²-rescaling model,We can well explain the experimental data of the EMC effect in the whole x region,the nuclear Drell-Yan Process and J/ψ photoproduction process.

References

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J.J.Aubert et al,Phys.Lett.,B123（1983）275.[2]D.M.Alde et al,Phys.Rev.Lett.,64（1990）2479.[3]G.L.Li,Z.J.Cao.C.S.Zhong,Nucl.Phys,A509（1990）757;G.L.Li,K.F.Liu,G.E.Brown,Phys.Lett.B213（1988）531.[4]R.Bickerstaff et al,Phys,Rev,D33（1986）3229.[5]F:E.Close,R.G.Roberts,G.G.Ross,Phys.Lett,B129（1983）346;R.L.Jaffe,et.al,Phys.Lett.B134(1984)449; F. E. Close et al., Phys. Rev., D31(1985)1004.[6]F.E.Close.R.G.Roberts,Phys.Lett.,B213（1988）91[7]段春贵、何祯民、彭宏安，河北师范大学学报，19卷2期（1995）35.[8]S.Kumano,Phys,Lett.,B298（1993）171.[9]J.G.Morfin,W.K.Tung,Z Phys.,C52（1991）13.

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Yao Xiaoxia, He Zhenmin, Duan Chungui, Li Guanglie and Peng Hongan. Improved Q ²-Rescaling Model and the Nuclear Effect of Parton Distribution Functions[J]. Chinese Physics C, 1997, 21(6): 548-553.

Yao Xiaoxia, He Zhenmin, Duan Chungui, Li Guanglie and Peng Hongan. Improved Q ²-Rescaling Model and the Nuclear Effect of Parton Distribution Functions[J]. Chinese Physics C, 1997, 21(6): 548-553. shu

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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 Q²-Rescaling Model and the Nuclear Effect of Parton Distribution Functions

Corresponding author:Yao Xiaoxia,

Department of Physics,Hebei Teacher's University,Shijiazhuang 0500162 Institute of Energy Physics,The Chinese Acadenty of Sciences,Beijing 1000393 Department of Physics,Peking University,Beijing 10087

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1997-06-05

Abstract:Considering that the original Q²-rescaling model has some shortcomings in explaining the experimental data,we propose animproved Q²-rescaling model in which,in order to compensate for the loss of nuclear momentum,we employ different Q²-rescaling parameters for momentum distributions of valence quark,sea quark and glouns.By using improved Q²-rescaling model,We can well explain the experimental data of the EMC effect in the whole x region,the nuclear Drell-Yan Process and J/ψ photoproduction process.