Strong decays of multistrangeness baryon resonances in the quark model

クォーク模型による多ストレンジバリオン共鳴の強い相互作用崩壊

Arifi, A. J.*; 末永 大輝*; 保坂 淳; Oh, Y. S.*

Arifi, A. J.*; Suenaga, Daiki*; Hosaka, Atsushi; Oh, Y. S.*

Decay properties of multistrangeness and baryon resonances are investigated within the constituent quark model by including relativistic corrections. The strong decay widths of various and resonances are computed and tested for internal quark configurations to pin down their spin-parity () quantum numbers and internal structures. We found that the Roper-like resonances in the multistrangeness sector have large decay widths bearing resemblances to their siblings in light and heavy baryon sectors. In addition, we obtained the decay ratio for the (2012) as ( )/( ) = 4.5%, which is consistent with the experimental data when = 3/2 is assigned. This observation holds the possibility that the (2012) could naturally be explained as a three-quark state in the quark model. The decays of other low-lying and resonances are systematically analyzed, which would be useful to unveil the structure of these resonances in future experiments.