Decay behavior of hidden-strange hadronic molecular state $N(2270)$

Abstract

In this article, we systematically discuss the decay patterns of the hidden-strange hadronic molecular state $N(2270)$ which is assumed as an S-wave $K^{\ast }{\Sigma }^{\ast }$ shallow bound state with its possible quantum numbers $J^P$ which are ${1/2}^{-}$, ${3/2}^{-}$ and ${5/2}^{-}$. By using the effective Lagrangian approach and considering pseudo-scalar meson and vector meson exchanges, we have thoroughly calculated and discussed the decay behavior of the $N(2270)$ molecular state, including hadronic and radiative decay and the cutoff dependence, for different $J^P$ values. For all three cases, $K^{\ast }\Lambda$, $K^{\ast }\Sigma$, and $\rho N$ final states are always included as the main decay channels. However, the $K\Lambda$, $\pi N$ and $\pi \Delta$ final states exhibit notable differences. These different decay properties will provide valuable guidance for future experimental searches and aid in distinguishing different $J^P$ assumptions and understanding their internal structures.

10 pages, 7 figures, 5 tables

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Cited by in corpus (2)

• Baryons and baryoniums in the perspective of QCD sum rules
• Strange pentaquark molecules in QCD sum rules