The Influence of Nuclear Target on “Small” Mass Lepton Pair Production of High Energy Hardon-Nuclei Collision

  • Based on Drell-Yan Mechanism modified by pertubative QCD and taking account of the contribution of vector meson states,we analyzed and explained the data of the WA-78 group ni (π,P)+A→μμ+X process at 2mμμμ<1.5GeV and 0.1F<0.6 with the use of the rescaling model and the recent accurately measured data of the NMC Group for the ratio of structure functions RA(x,Q2) in 1-A deep inelastic scattering process at 0.00352<90MeV2/c2.In our analysis,after comparison with the data of the CIP group for the same process but at different mll and xF regions,we gave a good explanation for why the influence of nuclear target displays a strong shadowing effect in former case while a strong antishadowing effect in latter case.By the rescaling model and other reasonable assumptions,we showed it is intimately connected with the above mentioned the RA(x,Q2) and thus further revealing the essential connection for the influence.
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GAO Yong-Hua, HE Zhen-Min, HUANG Rui-Wang and PENG Hong-An. The Influence of Nuclear Target on “Small” Mass Lepton Pair Production of High Energy Hardon-Nuclei Collision[J]. Chinese Physics C, 1992, 16(7): 623-632.
GAO Yong-Hua, HE Zhen-Min, HUANG Rui-Wang and PENG Hong-An. The Influence of Nuclear Target on “Small” Mass Lepton Pair Production of High Energy Hardon-Nuclei Collision[J]. Chinese Physics C, 1992, 16(7): 623-632. shu
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The Influence of Nuclear Target on “Small” Mass Lepton Pair Production of High Energy Hardon-Nuclei Collision

    Corresponding author: GAO Yong-Hua,
  • Department of Physics Educational College of Shijiazhuang 0500312 Department of Physics,Hebei Normal University,Shijiazhuang 0500313 Department of Physics,Peking University,Beijing 100871

Abstract: Based on Drell-Yan Mechanism modified by pertubative QCD and taking account of the contribution of vector meson states,we analyzed and explained the data of the WA-78 group ni (π,P)+A→μμ+X process at 2mμμμ<1.5GeV and 0.1F<0.6 with the use of the rescaling model and the recent accurately measured data of the NMC Group for the ratio of structure functions RA(x,Q2) in 1-A deep inelastic scattering process at 0.00352<90MeV2/c2.In our analysis,after comparison with the data of the CIP group for the same process but at different mll and xF regions,we gave a good explanation for why the influence of nuclear target displays a strong shadowing effect in former case while a strong antishadowing effect in latter case.By the rescaling model and other reasonable assumptions,we showed it is intimately connected with the above mentioned the RA(x,Q2) and thus further revealing the essential connection for the influence.

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