On the Test of Pomeron Structure (Parton Distribution Functions)

  • The contributions of the double Pomeron exchange to the J/ψ production inhigh energy p+p(p) collisions are calculated using different models for parton distribution functions inside the Pomeron(P). For the Ingelman-Schlein model in which gluons dominate in partons, the cross sections in high energy increase smoothly with as In2S or InS. The total cross section σ(S) is about 102-103nb in the TeV energies. For the Donnachie-Landshoff model in which the P are considered as something like isoscalar photons with C=+1 the cross section behavior increasing with energy is a little bit complicated. In same energy range, the cross sections are only 1-3nb which are smaller than that of the former case by 2—3 order of magnitude. So, if we assume the parameters of the above models are reliable, then these J/ψ production processes should be a good place for testing these models.
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He Zhenmin, Lin Zhongjin, Qin Kecheng and Peng Hongan. On the Test of Pomeron Structure (Parton Distribution Functions)[J]. Chinese Physics C, 1995, 19(4): 310-319.
He Zhenmin, Lin Zhongjin, Qin Kecheng and Peng Hongan. On the Test of Pomeron Structure (Parton Distribution Functions)[J]. Chinese Physics C, 1995, 19(4): 310-319. shu
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Received: 1900-01-01
Revised: 1900-01-01
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On the Test of Pomeron Structure (Parton Distribution Functions)

    Corresponding author: He Zhenmin,
  • Department of Physics, Hebei Teacher's University, Shijiazhuang 0500162 Department of Physics, Xiamen University, Xiamen 3610053 Department of Physics, Peking University, Beijing 100871

Abstract: The contributions of the double Pomeron exchange to the J/ψ production inhigh energy p+p(p) collisions are calculated using different models for parton distribution functions inside the Pomeron(P). For the Ingelman-Schlein model in which gluons dominate in partons, the cross sections in high energy increase smoothly with as In2S or InS. The total cross section σ(S) is about 102-103nb in the TeV energies. For the Donnachie-Landshoff model in which the P are considered as something like isoscalar photons with C=+1 the cross section behavior increasing with energy is a little bit complicated. In same energy range, the cross sections are only 1-3nb which are smaller than that of the former case by 2—3 order of magnitude. So, if we assume the parameters of the above models are reliable, then these J/ψ production processes should be a good place for testing these models.

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