Production and decay of anticharmed pentaquark state with quark content \(\bar{c}sudd\)

We use an effective Lagrangian approach to investigate the production of the anticharmed pentaquark state \(P_{\bar{c}s}^{(*)-}\) with the minimal quark content \(\bar{c}sudd\) in the \(\Lambda _b^0\) decay. In our calculation, the \(P_{\bar{c}s}^{(*)-}\) is considered as the molecule state of the \(nD_{s0(s1)}^{-}\) in an S wave, and its production and decay occur via triangle loops at the hadron level. With the moderate model parameters, the computed results suggest that the branching fractions of \(\Lambda _b^0\rightarrow P_{\bar{c}s}^{(*)-} D^+ \) can reach approximately \(10^{-4}\). The possible decay modes \( P_{\bar{c}s}^{(*)-} \rightarrow \Lambda D^{(*)-}\) and \( P_{\bar{c}s}^{(*)-} \rightarrow \Sigma D^{(*)-}\) are also investigated. It is hoped that these predictions could be helpful in searching for the anticharmed-strange pentaquark candidates in future LHCb experiments.