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Chinese Physics C > 2022, Vol. 46 > Issue(9): 093101 DOI: 10.1088/1674-1137/ac6daa

Exclusive vector meson production with the analytical solution of Balitsky-Kovchegov equation

  • 1.

    Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

  • 2.

    Lanzhou University, Lanzhou 730000, China

  • 3.

    University of Chinese Academy of Sciences, Beijing 100049, China

  • 4.

    Guangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, Guangzhou 510006, China

  • 5.

    School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China

  • Exclusive vector meson production is an excellent probe for describing the structure of protons. In this study, based on the dipole model, the differential cross sections, total cross sections, and ratios of the longitudinal to transverse cross section of the $ J/\psi $ and $ \rho^0 $ productions are calculated with the analytical solution of the Balitsky-Kovchegov (BK) equation. In addition, we consider the influences of two meson wave function models on the results. Our predictions, which are slightly sensitive to meson wave functions, agree with the experimental data. The analytical solution of the BK equation is reliable for description of exclusive vector meson productions in a certain range of $ Q^2 $ .
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