Spectrum of low-lying $s^{3}Q\bar{Q}$ configurations with negative parity

TL;DR

This study investigates the spectrum of low-lying negative parity five-quark states with strangeness S=-3 across three constituent quark models, revealing lower energies than traditional three-quark models and differing spin configurations.

Contribution

It provides a comparative analysis of five-quark configurations with strangeness S=-3 using three different hyperfine interaction models, highlighting their energy spectra and spin properties.

Findings

Lowest energy states around 1800 MeV in all models

Energy lower than traditional three-quark models by about 200 MeV

Different spin assignments for the lowest energy state across models

Abstract

Spectrum of low-lying five-quark configurations with strangeness quantum number $S=-3$ and negative parity is studied in three kinds of constituent quark models, namely the one gluon exchange, Goldstone Boson exchange, and instanton-induced hyperfine interaction models, respectively. Our numerical results show that the lowest energy states in all the three employed models are lying at $\sim$1800 MeV, about 200 MeV lower than predictions of various quenched three-quark models. In addition, it is very interesting that the state with the lowest energy in one gluon exchange model is with spin 3/2, but 1/2 in the other two models.