Improved Nuclear Density Model and the Nuclear Effect in the l-A DIS Process

  • In this paper, an improved nuclear density model is presented. The formulas of nuclear effect parameters RVA (x,Q2) and RSA (x,Q2) for the valence quark distribution and sea quark distribution in nucleus are derived, in which the connection between the nuclear density and the mean binding energy in nucleus is used. In terms of this model, the experimental data of the averaged nucleon structure function ratio of DIS process in l-A are well explained.
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  • [1] . EMC Collab, Aubert J J et al. Phys. Lett., 1983, B123: 2752. Close F E, Roberts R G, Ross G G. Phys. Lett., 1983, B129: 3463. Ja e R L et al. Phys. Lett., 1984, B134: 4494. Close F E et al. Phys. Rev., 1985, D31: 10045. LI Guang-Lie et al. Nucl. Phys., 1990, A509: 7576. HE Zhen-Min et al. Eur. Phys. J., 1998, C34: 3017. Frankfurt L L, Strikman M I. Phys. Rep., 1988, 160: 2358. Gomez J et al. Phys. Rev., 1994, D49: 43089. GAO Yong-Hua, DUAN Chun-Gui, HOU Zhao-Yu et al.HEP NP, 2004, 28(3): 290(in Chinese)(高永华, 段春贵, 侯召宇宙等. 高能物理与核物理, 2004, 28(3); 29010. ZHENG Qiao, HOU Zhao-Yu, GAO Yong-Hua et al. HEP NP, 2004, 28(7): 711(in Chinese)(郑乔, 侯召宇, 高永华等. 高能物理与核物理; 2004; 28(7): 711)11. CHEN J W, Detmold W. Phys. Lett., 2005, B625: 16512. NMC Clloab, Amaudruz P et al. Nucl. Phys., 1995, B441: 313. NMC Clloab, Arneodo M et al. Nucl. Phys., 1996, B481: 314. GAO Yong-Hua, HE Zhen-Min, DUAN Chun-Gui. ActaPhys. Sin., 2001, 50(6): 1028(in Chinese)(高永华, 何祯民, 段春贵. 物理学报, 2001, 50(6): 1028)15. Gluck M, Reya E, Vogt A. Z. Phys. Rev., 1995, C67: 433
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GAO Yong-Hua, HOU Zhao-Yu, WANG Yan-Zhao, CAO He-Fei, ZHANG Wei and DUAN Chun-Gui. Improved Nuclear Density Model and the Nuclear Effect in the l-A DIS Process[J]. Chinese Physics C, 2006, 30(10): 972-975.
GAO Yong-Hua, HOU Zhao-Yu, WANG Yan-Zhao, CAO He-Fei, ZHANG Wei and DUAN Chun-Gui. Improved Nuclear Density Model and the Nuclear Effect in the l-A DIS Process[J]. Chinese Physics C, 2006, 30(10): 972-975. shu
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Received: 2005-12-17
Revised: 2006-01-21
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Improved Nuclear Density Model and the Nuclear Effect in the l-A DIS Process

    Corresponding author: GAO Yong-Hua,
  • Institute of Physics, Shijiazhuang College, Shijiazhuang 050801, China2 Department of Mathematics and Physics, Shijiazhuang Railway College, Shijiazhuang 050043, China3 Department of Physics, Hebei Normal University, Shijiazhuang 050016, China

Abstract: In this paper, an improved nuclear density model is presented. The formulas of nuclear effect parameters RVA (x,Q2) and RSA (x,Q2) for the valence quark distribution and sea quark distribution in nucleus are derived, in which the connection between the nuclear density and the mean binding energy in nucleus is used. In terms of this model, the experimental data of the averaged nucleon structure function ratio of DIS process in l-A are well explained.

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