Strong two- and three-body decays of the new excited hyperon Ω∗(2012) are discussed in the hadronic molecular approach. The Ω∗(2012) state is considered to contain the mixed ∗ K and Ωη hadronic components. In our calculations we use a phenomenological hadronic Lagrangian for description of interaction of the Ω∗(2012) state with constituents and of constituents to other hadrons occurring in the final state. Our results show that the decay widths of the two-body decay modes Ω ∗(2012) →K lie in the few MeV region and are compatible with or dominate over the rates of the three-body modes Ω ∗(2012)→ηK.. The sum of two- and three-body decay widths is consistent with a width of the Ω∗(2012) originally measured by the Belle collaboration. A possible scenario for the suppression of the three-body decay rate recently noticed by the Belle collaboration is due to the dominant admixture of the Ωη hadronic component in the Ω∗(2012) state.
|Journal||Journal of Physics G: Nuclear and Particle Physics|
|Publication status||Published - 16 Dec 2020|
- composite particles
- hadronic molecules
- strong decays
ASJC Scopus subject areas
- Nuclear and High Energy Physics