Molecular pentaquarks composed of a ground-state octet baryon and a $P-$wave anticharmed meson

Abstract

In this work, we investigate the interactions between an excited anticharm meson doublet $({\bar{D}}_1,{\bar{D}}_2^{\ast })$ and ground-state octet baryons $(N,\Lambda ,\Sigma ,\Xi )$ with the aim of identifying possible molecular pentaquark states. A systematic analysis is performed within the one-boson-exchange model, which incorporates both $S$ and $P$-wave interactions, $S$-$D$ mixing, and coupled-channel effects. By solving the Schrödinger equations, we can predict a rich spectrum of loosely bound anticharm molecular pentaquarks with strangeness $|S|=0,1,2$. Our results provide specific quantum number assignments and mass range predictions to guide future experimental searches at facilities such as LHCb and Belle II. The discovery of such states would significantly enrich the hadron spectrum and serve as a critical test of theoretical models for hadronic interactions.

arXiv comment16 pages, 14 figure, accepted by prd

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