Decay patterns of low-lying $N_{s\bar{s}}$ states to the strangeness channels

TL;DR

This study explores the decay patterns of low-lying hidden strangeness nucleon resonances as compact pentaquark states using a chiral Lagrangian approach, identifying potential matches with known and predicted nucleon resonances.

Contribution

It introduces a novel analysis of $N_{sar{s}}$ states as pentaquarks and predicts their decay properties and possible correspondence with experimental resonances.

Findings

Four $N_{sar{s}}$ states identified with known and predicted nucleon resonances.

Decay patterns suggest these states are related to established and missing resonances.

Several hidden strangeness nucleon resonances may be key components of missing states.

Abstract

Here we investigate the decay patterns of the low-lying hidden strangeness nucleon resonances ($\equiv N_{s\bar{s}}$) to the strangeness channels by employing the chiral Lagrangian approach, where the $N_{s\bar{s}}$ states are treated as compact pentaquark states. The $S$-wave decays of these states to the $PB$ (pseudoscalar meson and baryon) and $VB$ (vector meson and baryon) channels are studied. According to the obtained masses and decay properties, we find four states, namely, $N_{s\bar{s}}(1874)$ with quantum numbers $I(J^{P})=1/2(1/2^{-})$, $N_{s\bar{s}}(1885)$ with $I(J^{P})=1/2(3/2^{-})$, $N_{s\bar{s}}(2327)$ with $I(J^{P})=1/2(1/2^{-})$, and $N_{s\bar{s}}(2252)$ with $I(J^{P})=1/2(3/2^{-})$, may be associated to the well established nucleon resonances $N^*(1895)$, $N^{*}(1875)$, and the newly predicted $N^{*}(2355)$ and $N^{*}(2250)$ by CLAS collaboration, respectively. In addition, several other obtained hidden strangeness nucleon resonances may be expected to be dominant components of the predicted missing resonances in the literatures.