Can the newly $P_{cs}(4459)$ be a strange hidden-charm $\Xi_c\bar{D}^{*}$ molecular pentaquarks?

TL;DR

This study investigates whether the $P_{cs}(4459)$ can be explained as a molecular pentaquark state involving strange hidden-charm components, using a coupled-channel analysis with a one-boson-exchange model.

Contribution

It provides the first coupled-channel analysis suggesting $P_{cs}(4459)$ is a mixed molecular state with specific quantum numbers, expanding understanding of hidden-charm pentaquark structures.

Findings

$P_{cs}(4459)$ is likely a coupled $ ext{Xi}_car{D}^*/ ext{Xi}_c^*ar{D}/ ext{Xi}_c^{ ext{'} }ar{D}^*/ ext{Xi}_c^*ar{D}^*$ bound state.

Strong attraction found in $ ext{Xi}_c^{'}ar{D}^*$, $ ext{Xi}_c^{*}ar{D}$, and $ ext{Xi}_c^{*}ar{D}^*$ systems.

Possible molecular or resonant structures near these thresholds are predicted.

Abstract

Stimulated by the $P_{cs}(4459)$ reported by the LHCb Collaboration, we perform a single $\Xi_c\bar{D}^*$ channel and a coupled $\Xi_c\bar{D}^*/\Xi_c^*\bar{D}/\Xi_c^{\prime}\bar{D}^*/\Xi_c^*\bar{D}^*$ channel analysis by using a one-boson-exchange model. Our results indicate that the newly $P_{cs}(4459)$ cannot be a pure $\Xi_c\bar{D}^*$ molecular state, but a coupled $\Xi_c\bar{D}^*/\Xi_c^*\bar{D}/\Xi_c^{\prime}\bar{D}^*/\Xi_c^*\bar{D}^*$ bound state with $I(J^P)=0(3/2^-)$, where the $\Xi_c\bar{D}^*$ and $\Xi_c^*\bar{D}$ components are dominant. Meanwhile, we find the interactions from the $\Xi_c^{\prime}\bar{D}^*$ system with $0(1/2^-)$, the $\Xi_c^{*}\bar{D}$ system with $1(3/2^-)$, and the $\Xi_c^{*}\bar{D}^*$ system with $1(1/2^-)$ are strongly attractive, where one can expect possible strange hidden-charm molecular or resonant structures near the these thresholds with the assigned quantum numbers.