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

  • 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.
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  • [1] 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 Q2-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 Q2-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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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

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.

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