\begin{document}$ p+p $\end{document} and \begin{document}$ p+{\rm{Pb}} $\end{document}), medium \begin{document}$\rm (O+O) $\end{document}, and large \begin{document}$\rm (Pb+Pb) $\end{document}, in a wide rapidity acceptance. The results illustrate that the direct photon production process is a sensitive probe to decipher the difference of the nPDF parameterization implementations, which provides new insights for the experimental measurements to refine the nuclear modifications of the parton distributions. To provide a benchmark for searching for quark gluon plasma in the upcoming small system measurements at LHC energies, we carry out detailed studies on the cold nuclear matter effect in \begin{document}$\rm (O+O) $\end{document} collisions. Our outcomes show that the cold nuclear matter effects are negligible for the charged hadron production in \begin{document}$\rm (O+O) $\end{document} collisions, which can be used as a baseline to subtract the initial state contribution."> Systematic studies on the nuclear parton distribution with photon and hadron productions in nuclear collisions at the LHC -
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