On the Testing of Models of the Pomeron Structure (Parton Distribution Functions)

He Zhenmin; Lin Zhongjin; Qin Kecheng; Peng Hongan

Chinese Physics C> 1995, Vol. 19> Issue(S2) : 173-182

On the Testing of Models of the Pomeron Structure (Parton Distribution Functions)

1 Department of Physics, Hebei Normal University, Shijiazhuang Hebei, China;
2 Department of Physics, Xiamen University, Xiamen, China;
3 Department of Physics, Peking University, Beijing, China

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Abstract：
The contributions of the double pomeron exchange (DPE) to the production of high-energy p+ p(p) collisions are calculated using both the Ingelman-Schlein model and the Donnachie-Landshoff model of the parton distribution functions for the pomeron (P). For the D-L model, in which gluons dominate the pomeron, the cross sections at high energy increase with energy √S as ln²S or InS. Its total cross section, σ(S), is about 10²-10³ nb in the TeV energies region. For the D-L model, in which P is considered a nonperturbative gluons system and its coupling with quarks is something like isoscaler photons with C=+1, its cross-section behavior with energy is a bit complicated. In the same energy range as in the D-L model, cross sections in the D-L model are only 1-3 nb, which is smaller than that of the former by 2-3 orders of magnitude. So if we assume that the parameterizations of both models are reliable, their J/ψ production processes should themselves become a good means of testing these models.
- structure of pomeron ,
- double pomeron exchange ,
- Ingelman-Schlein model ,
- Donnachie-Landshoff model
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He Zhenmin, Lin Zhongjin, Qin Kecheng and Peng Hongan. On the Testing of Models of the Pomeron Structure (Parton Distribution Functions)[J]. Chinese Physics C, 1995, 19(S2): 173-182.

He Zhenmin, Lin Zhongjin, Qin Kecheng and Peng Hongan. On the Testing of Models of the Pomeron Structure (Parton Distribution Functions)[J]. Chinese Physics C, 1995, 19(S2): 173-182. shu

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Received: 1994-02-08

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Supported by the National Natural Science Foundation of China Doctoral Foundation of National Education Committee of China and the Natural Science Foundation of Hebei Province.

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沈阳化工大学材料科学与工程学院沈阳 110142

On the Testing of Models of the Pomeron Structure (Parton Distribution Functions)

1 Department of Physics, Hebei Normal University, Shijiazhuang Hebei, China;
2 Department of Physics, Xiamen University, Xiamen, China;
3 Department of Physics, Peking University, Beijing, China

Received Date: 1994-02-08

Fund Project: Supported by the National Natural Science Foundation of China Doctoral Foundation of National Education Committee of China and the Natural Science Foundation of Hebei Province.

Abstract: The contributions of the double pomeron exchange (DPE) to the production of high-energy p+ p(p) collisions are calculated using both the Ingelman-Schlein model and the Donnachie-Landshoff model of the parton distribution functions for the pomeron (P). For the D-L model, in which gluons dominate the pomeron, the cross sections at high energy increase with energy √S as ln²S or InS. Its total cross section, σ(S), is about 10²-10³ nb in the TeV energies region. For the D-L model, in which P is considered a nonperturbative gluons system and its coupling with quarks is something like isoscaler photons with C=+1, its cross-section behavior with energy is a bit complicated. In the same energy range as in the D-L model, cross sections in the D-L model are only 1-3 nb, which is smaller than that of the former by 2-3 orders of magnitude. So if we assume that the parameterizations of both models are reliable, their J/ψ production processes should themselves become a good means of testing these models.