Looking for the hidden-charm pentaquark resonances in $J/\psi p$ scattering

TL;DR

This paper uses a quark delocalization color screening model to identify potential hidden-charm pentaquark resonances as molecular states in baryon-meson scattering, predicting several new states for future experimental searches.

Contribution

The study introduces a novel application of the quark delocalization color screening model to identify hidden-charm pentaquark states as molecular baryon-meson configurations, extending predictions to $P_b$-like states.

Findings

Identified three new hidden-charm pentaquarks as molecular states.

Predicted additional possible molecular pentaquarks with specific quantum numbers.

Extended calculations to $P_b$-like states with masses above 11 GeV.

Abstract

In the framework of quark delocalization color screening model, the three new reported pentaquarks $P_{c}(4312)$, $P_{c}(4440)$, and $P_{c}(4457)$ can be identified as the hidden-charm molecular states $\Sigma_{c}D$ with $J^{P}=\frac{1}{2}^{-}$, $\Sigma_{c}D^{*}$ with $J^{P}=\frac{3}{2}^{-}$, and $\Sigma_{c}D^{*}$ with $J^{P}=\frac{1}{2}^{-}$, in the baryon-meson scattering process, respectively. Besides, the $\Sigma^{*}_{c}D^{*}$ of both $J^{P}=\frac{1}{2}^{-}$ and $J^{P}=\frac{3}{2}^{-}$ are also possible molecular pentaquarks. Moreover, the calculation is extended to the $P_{c}-$like molecular pentaquarks $P_{b}$. Several states with masses above $11$ GeV and narrow width are obtained. All these heavy pentaquarks are worth searching in the future experiments.