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

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Gao Yonghua, He Zhenmin, Huang Ruiwang and Peng Hong'an. The Influence of Nuclear Target on “Small” Mass Lepton Pair Production of High Energy Hadron-Nuclei Collision[J]. Chinese Physics C, 1992, 16(S3): 281-289.
Gao Yonghua, He Zhenmin, Huang Ruiwang and Peng Hong'an. The Influence of Nuclear Target on “Small” Mass Lepton Pair Production of High Energy Hadron-Nuclei Collision[J]. Chinese Physics C, 1992, 16(S3): 281-289. shu
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Received: 1991-08-05
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    Supported by the National Natural Science Foundation of China.

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

  • 1 Department of Physics. Shijiazhuang College of Education, Shijiazhuang, Hebei, China;
  • 2 Department of Physics. Hebei Normal University, Shijiazhuang, Hebei, China;
  • 3 Department of Physics, Beijing University, Beijing, China
Fund Project:  Supported by the National Natural Science Foundation of China.

Abstract: Based on Drell-Yan Mechanism modified by perturbative QCD and the contribution vector meson states,we analyze and explain the data of the WA-78 Group (π-,P) + A →μμ + X process at 2mμmμμ ≤ 1.5GeV and 0.1 ≤ xF ≤ 0.6, in which we use the rescaling model and the data of the NMC Group for the ratio of structure functions RA(x, Q2) in 1-A deep inelastic scattering process at 0.0035 < x < 0.65 and 0.5 < Q2 < 90 GeV2/c2. After a comparisdrwith the data of the CIP group for the same process but different xF and mμμ intervals, we explain why the influence of nuclear target displays a strong shadowing effect in the former case but a strong anti-shadovving effect in the latter. Using the rescaling model and other reasonable assumptions,we show that the above results are closely related to RA(x, Q2) and thus reveal the essential connection between the nuclear effects in 1-A deep inelastic scattering and in h-A pair production processes.

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