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The $p p \to n K^+ \Sigma^+(1385)$ reaction is a very good isospin $3/2$filter for studying $\Delta^{++*}$ resonance decaying to $K^+\Sigma^+(1385)$.Within the effective Lagrangian method, we investigate the $\Sigma(1385)$(spin-parity $J^P = 3/2^+$) hadronic production in the $\pi^+ p \to K^+\Sigma^+(1385)$ and $p p \to n K^+ \Sigma^+(1385)$ reactions. For $\pi^+ p \toK^+ \Sigma^+(1385)$ reaction, in addition to the "background" contributionsfrom $t$-channel $K^{*0}$ exchange, $u$-channel $\Lambda(1115)$ and$\Sigma^0(1193)$ exchange, we also consider the contribution from the$s$-channel $\Delta^*(1940)$ resonance, which has significant coupling to$K\Sigma(1385)$ channel. We show that the inclusion of the $\Delta^*(1940)$resonance leads to a fairly good description of the low energy experimentaltotal cross section data of $\pi^+ p \to K^+ \Sigma^+(1385)$ reaction. Basingon the study of $\pi^+ p \to K^+\Sigma^+(1385)$ reaction and with theassumption that the excitation of $\Delta^*(1940)$ resonance dominant the $pp\to n K^+ \Sigma^+(1385)$ reaction, we calculate the total and differentialcross sections of $p p \to n K^+ \Sigma^+(1385)$ reaction. It is shown that thenew experimental data support the important role played by the $\Delta^*(1940)$resonance with a mass in the region of $1940$ MeV and a width of around $200$MeV. We also demonstrate that the invariant mass distribution and the DalitzPlot provide direct information of the $\Sigma^+(1385)$ production, which canbe tested by future experiments.

Role of the $\Delta^*(1940)$ in the $\pi^+ p \to K^+ \Sigma^+(1385)$ and $pp \to n K^+ \Sigma^+(1385)$ reactions