The strange quark plays a unique role in QCD, reflecting its intermediate mass between the light and heavy quarks. In recent years, remarkable progress has been made spectroscopy of baryons with strangeness. Many new features baryon spectrum have revealed by accurate experimental data novel techniques, as well systematic developments theoretical framework to describe hadron resonances. basic pr...

Abstract A feasibility study has been performed in order to investigate the performance of HADES detector measure electromagnetic decays hyperon resonances $$\Sigma (1385)^{0}$$ ? ( 1385 ) 0 , $$\...

The electric mean squared radii 〈r〉E of Λ(1405) are calculated in the chiral unitary model. We describe the Λ(1405) as a dynamically generated resonance fully in the octet meson and octet baryon scattering. We also consider “Λ(1405)” as a bound state of K̄N . For the later “Λ(1405),” we obtain negative and larger absolute value of electric mean squared radius than that of ordinary baryons, which...

We examine the radiative decays of the Λ(1405) to octet baryons, Λ(1405) → Λγ and Λ(1405) → Σ0γ. In the limit of SU(3) symmetry the decay rates for these two modes are related, and we compute the leading correction to the relation in chiral perturbation theory. Such measurements will allow the sign of the strong coupling gΛ∗ to be determined. The SU(3) violating radiative decay to the baryon de...

The nature of nucleon resonances is still being debated, while much experimental data are accumulated. In this work, we focus on the negative parity resonance ${N}^{*}(1895)$ which located in scattering region various meson-baryon coupled channels, and such dynamics can be crucial understanding its properties. To test relevance hadron dynamics, investigate decay properties detail. We examine ho...

The internal structure of the Λ(1405) hyperon has remained an unresolved mystery in hadron physics for decades. Observed as a resonance in Σπ just below the N-K threshold , it is the first excited Λ state; yet the nature of this resonance, where it belongs in the hierarchy of hyperons, and some of its basic properties, remain unsettled. In previous experiments, the invariant mass spectrum (line...

Photo-induced K * vector meson production is investigated for the study of the Λ(1405) resonance. This reaction is particularly suited to the isolation of the second pole in the Λ(1405) region which couples dominantly to the ¯ KN channel. We obtain the mass distribution of the Λ(1405) which peaks at 1420 MeV, and differs from the nominal one. Combined with several other reactions, this detailed...

The recent BESIII data on $J/\psi\to\gamma(K_SK_S\pi^0)$, which is significantly more precise than earlier $\eta(1405/1475)$-related data, enables quantitative discussions $\eta(1405/1475)$ at the previously unreachable level. We conduct a three-body unitary coupled-channel analysis of experimental Monte-Carlo outputs for radiative $J/\psi$ decays via $\eta(1405/1475)$: $K_SK_S\pi^0$ Dalitz plo...

The photo-induced K * vector meson production is investigated for the study of the Λ(1405) resonance. This reaction is particularly suited to the isolation of the second pole in the Λ(1405) region which couples dominantly to the ¯ KN channel. We obtain the mass distribution of the Λ(1405) which peaks at 1420 MeV, and differs from the nominal one. Combined with several other reactions, like the ...