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2024年10月30日

Improvement of the Parton Evolution Model in the Small x Region

  • In this paper,the parton evolution model is improved by using the modified Alteralli-Parisi equation which can describe the nuclear shadowing and anti-shadowing effects in the small x region.Within the theoretical framework of the improved parton evolution model,the unified description of the EMC effect,and nuclear shadowing and antishadowing effects is given without introducing the nuclear shadowing factor.
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  • [1] C. H. Llewellyn Smith ,Phys.Lett.,128B(1983),107.[2]E. Ericson and A. W. Thomos ,Phys. Lett.,128B(1983),112.[3]R. L. Jaffe,Phys. Rev. Lett.,SO (1983),228.[4]C. A. Garcia Canal et al ,,Phys, Rev. Lett.,33(1984),1430[5]F. E. Close et al. ,Phys. Lets.,129B(1983),346.[6]G. L. Li,Z. J. Cao and C. S. Zhong, Nucl. Phys.,A309(1990),757;G. L. Li,K. F. Liu and G. E. Brown, Phys. Lett.,213B(1988),531.[7]F. E. Close R. G. Roberts and' G. Gross , Phys. Lett.,168B(1986),400F. E. Close and R. G. Roberts , Phys. Lett.,213B(1988)91.[8]W. Zhu and 1. G. Shen, Phys. Lett.,233B(1990),170.[9]The European Muon Collabration ,CERN-PPE/92-155(1992).[10]Yang Jianjun ,Zhu Yabo and Shen Hongqing, High Energy arid Nuclear Physics (Allerton Press , Inc. /New York ) , 15 (1991) ,197.[11]A. H. Muller and J. Qiu,Nucl. Phys.,B268(1986),427;J. Qiu , Nucl. Phys.,B291(1987),746.[12]D. Duke and J. Owens, Phys. Rev.,D30(1984),40.[13]P. Amaudruz et al.,Z. Phys.,C31(1991),387.
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Get Citation
YU Ming-Jian, SHEN Jian-Ping and LI Guang-Lie. Improvement of the Parton Evolution Model in the Small x Region[J]. Chinese Physics C, 1993, 17(9): 861-864.
YU Ming-Jian, SHEN Jian-Ping and LI Guang-Lie. Improvement of the Parton Evolution Model in the Small x Region[J]. Chinese Physics C, 1993, 17(9): 861-864. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Improvement of the Parton Evolution Model in the Small x Region

    Corresponding author: YU Ming-Jian,
  • Institute of High Energy Physics,Academia Sinica,Beijing 100039

Abstract: In this paper,the parton evolution model is improved by using the modified Alteralli-Parisi equation which can describe the nuclear shadowing and anti-shadowing effects in the small x region.Within the theoretical framework of the improved parton evolution model,the unified description of the EMC effect,and nuclear shadowing and antishadowing effects is given without introducing the nuclear shadowing factor.

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