Further study of the Ω*|1P_3/2^-〉 state within a chiral quark model

Abstract In our previous studies, we analyzed the two-body strong decays of low-lying Ω baryon states within a chiral quark model. The results showed that mass, total width, and two body decay could be well reproduced with spin-parity J^P=3/2^- state \Omega^*|1P_{3/2^-}\rangle classified in Stimulated by new observations three-body process \Omega(2012)^-\to \Xi^*(1530)^0K^-\to \Xi^-\pi^+K^- at Belle, present study, further investigate \Xi^*(1530)\bar{K} \Xi\pi\bar{K} It is found has sizeable rate into final . When considering as resonance, predicted ratio $R_{\Xi\bar{K}}^{\Xi\pi\bar{K}}=\mathcal{B}[\Omega^*|1P_{3/2^-}\rangle\to \Xi^*(1530)\bar{K}\to \Xi\pi\bar{K}]/ \mathcal{B}[\Omega^*|1P_{3/2^-}\rangle \Xi\bar{K}]\simeq 12{\text%}$?> close to upper limit 11{\text%} measured Belle Collaboration 2019; however, it too small comparable recent measurement 0.97 \pm 0.24\pm 0.07 addition, coupled-channel effects on bare three-quark from nearby channels \Xi \bar{K} , \Omega\eta are studied. Our theoretical show not very large, molecular component no more than 30\% To clarify nature precise measurements R_{\Xi\bar{K}}^{\Xi\pi\bar{K}} needed, investigation coupled recommended.