Double Pomeron Exchange and J/<i>ψ</i>, γ Production at High Energy p+p(<span style="border-top: 1px solid; padding-top: 0px;">p</span>) Collisions

Peng Hongan; Qin Kecheng; He Zhenmin

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 1995, Vol. 19> Issue(S1) : 51-59

Double Pomeron Exchange and J/ψ, γ Production at High Energy p+p(p) Collisions

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

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Abstract：
The hard double diffractive production processes p+p(p)→p+p(p)+J/ψ(γ)+X at high energies are discussed. Under the assumption that gluon distribution with a behavior of l/x at small x in Pomeron is dominant, the dependence of cross section on energy √s is calculated. Comparisons with single diffractive hard process and corresponding non-diffractive Drell-Yang process are made. The present results show that the hard double diffractive processes are similar to single diffractive process, i.e., at extra-high energies the cross section basically increases in a manner of (In S)². The importance of this discovery for experiments is also pointed out.
- double diffractive hard processes ,
- gluon distributions function in Pomeron ,
- high energy collision

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Peng Hongan, Qin Kecheng and He Zhenmin. Double Pomeron Exchange and J/ψ, γ Production at High Energy p+p(p) Collisions[J]. Chinese Physics C, 1995, 19(S1): 51-59.

Peng Hongan, Qin Kecheng and He Zhenmin. Double Pomeron Exchange and J/ψ, γ Production at High Energy p+p(p) Collisions[J]. Chinese Physics C, 1995, 19(S1): 51-59. shu

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Received: 1993-10-04

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

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Double Pomeron Exchange and J/ψ, γ Production at High Energy p+p(p) Collisions

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

Received Date: 1993-10-04

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

Abstract: The hard double diffractive production processes p+p(p)→p+p(p)+J/ψ(γ)+X at high energies are discussed. Under the assumption that gluon distribution with a behavior of l/x at small x in Pomeron is dominant, the dependence of cross section on energy √s is calculated. Comparisons with single diffractive hard process and corresponding non-diffractive Drell-Yang process are made. The present results show that the hard double diffractive processes are similar to single diffractive process, i.e., at extra-high energies the cross section basically increases in a manner of (In S)². The importance of this discovery for experiments is also pointed out.