\begin{document}$ \Upsilon(1S,2S,3S) $\end{document} photoproduction at the future Circular-Electron-Positron-Collider (CEPC) is studied, using the non-relativistic quantum chromodynamics (NRQCD) factorization formalism. Including the contributions from both direct and resolved photons, we present different distributions for the \begin{document}$ \Upsilon(1S,2S,3S) $\end{document} production. Our results suggest that there will be considerable events, implying that well measurements of the \begin{document}$ \Upsilon $\end{document} photoproduction can be performed to further study heavy quarkonium physics at electron-positron colliders, in addition to hadron colliders. This supplemental study is very important for clarifying the current situation regarding the heavy quarkonium production mechanism."> Inclusive <inline-formula><tex-math id="M1">\begin{document}$ {{\Upsilon(1S,2S,3S)}}$\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/7115926c-8471-4847-9715-e858959bc6a3/CPC-2020-0500_M1.jpg"/><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/7115926c-8471-4847-9715-e858959bc6a3/CPC-2020-0500_M1.png"/></alternatives></inline-formula> photoproduction at the CEPC -
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