Exclusive Charmonium Photo-Production at HERA and LHC with Color Glass Condensate

doi:10.1088/0256-307X/34/12/122501

Chin. Phys. Lett.

2017, Vol. 34

Issue (12): 122501 DOI: 10.1088/0256-307X/34/12/122501

NUCLEAR PHYSICS

Exclusive Charmonium Photo-Production at HERA and LHC with Color Glass Condensate

Yan-Bing Cai¹, Yi Yang², Dai-Cui Zhou³, Wen-Chang Xiang^2**

¹Department of Physics, Yunnan University, Kunming 650091
²Center for Interdisciplinary Studies in Physics and Related Areas, Guizhou University of Finance and Economics, Guiyang 550025
³Institute of Particle Physics, Central China Normal University, Wuhan 430079

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Yan-Bing Cai, Yi Yang, Dai-Cui Zhou et al 2017 Chin. Phys. Lett. 34 122501

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Abstract We calculate the exclusive charmonium photo-production in the framework of color glass condensate. To obtain a good description of the vector meson production experimental data at HERA, we introduce a vector meson mass dependent skewness factor into the skewness effect. Then we extend the skewness improved model to the LHC energies. The numerical results of our model are in good agreement with the $J/\psi$ and $\psi(2S)$ data in ultra-peripheral proton–proton collisions at LHC, which show the significance of the vector meson mass-dependent skewness factor. A prediction of the exclusive charmonium photo-production in ultra-peripheral nucleus–nucleus collisions is performed since it can provide a good way to test the effectiveness of the color glass condensate.

Received: 01 August 2017 Published: 24 November 2017

PACS:	25.75.Dw	(Particle and resonance production)
	13.60.Le	(Meson production)
	25.75.-q	(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))

Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11765005, 11305040, IRG11521064, 11775097 and 11465021, the Fund of Science and Technology Department of Guizhou Province under Grant No [2015]2114, and the Education Department of Guizhou Province under Grant No.KY[2017]004.

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https://cpl.iphy.ac.cn/10.1088/0256-307X/34/12/122501 OR https://cpl.iphy.ac.cn/Y2017/V34/I12/122501

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