\begin{document}$ T^+_{cc} $\end{document} from the \begin{document}$ pp \to D^0D^0\pi^+ + X $\end{document} process. A key question is whether it is just a molecule or may have a confined tetraquark ingredient. To investigate this, different methods were used, including a two-channel (\begin{document}$ D^{*+}D^0 $\end{document} and \begin{document}$ D^{*0}D^+ $\end{document}) K-matrix unitarization and a single-channel Flatté-like parametrization method analyzed utilizing the pole counting rule and spectral density function sum rule. These analyses demonstrated that \begin{document}$ T^+_{cc} $\end{document} is a molecular state, although the possibility that there may exist an elementary ingredient cannot be excluded, according to an approximate analysis of its production rate."> Some remarks on compositeness of <inline-formula><tex-math id="Z-20240118163000">\begin{document}${{\boldsymbol T}^{\bf +}_{\boldsymbol{cc}}} $\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/6ff65a36-359b-4caf-bd28-2ff3486460f9/CPC-2023-0453_Z-20240118163000.jpg"/><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/6ff65a36-359b-4caf-bd28-2ff3486460f9/CPC-2023-0453_Z-20240118163000.png"/></alternatives></inline-formula> -
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