\begin{document}$ \Delta $\end{document} mass dependence of the M matrix and its influence on the \begin{document}$ N\Delta \to NN $\end{document} cross-sections are investigated in the one-boson exchange model. Our calculations show that the \begin{document}$ \Delta $\end{document} mass dependence of the momentum of the outgoing \begin{document}$ \Delta $\end{document} and the M matrix affects the calculations of \begin{document}$ \sigma_{N\Delta\to NN} $\end{document}, especially around the threshold energy."> The Δ mass dependence of the <i>M </i>matrix and its influence on the <inline-formula><tex-math id="L00-2">\begin{document}${{N\Delta \to NN}} $\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/805cf448-0c4d-4136-bb35-3c8680818738/CPC-2019-0372_L00-2.jpg"/><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/805cf448-0c4d-4136-bb35-3c8680818738/CPC-2019-0372_L00-2.png"/></alternatives></inline-formula> cross-sections -
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