Study on N Omega-bar systems in a chiral quark model

Abstract

The N Omega-bar systems with spin S=1 and S=2 are dynamically investigated within the framework of the chiral SU(3) quark model and the extended chiral SU(3) quark model by solving the resonating group method (RGM) equation. The model parameters are taken from our previous work, which gave a good description of the energies of the baryon ground states, the binding energy of deuteron, and the experimental data of the nucleon-nucleon (NN) and nucleon-hyperon (NY) scattering processes. The results show that N Omega-bar states with spin S=1 and S=2 can be bound both in the chiral SU(3) and extended chiral SU(3) quark models, and the binding energies are about 28-59 MeV. When the annihilation effect is considered, the binding energies increase to about 37-130 MeV, which indicates the annihilation effect plays a relatively important role in forming an N Omega-bar bound state. At the same time, the N Omega-bar elastic scattering processes are also studied. The S, P, D partial wave phase shifts and the total cross sections of S=1 and S=2 channels have been calculated by solving the RGM equation for scattering problems.

16 pages, 7 figures

References in corpus (10)

• Chiral Dynamics and the $S_{11}(1535)$ Nucleon Resonance
• On baryon resonances and chiral symmetry
• N-N Interactions in the Extended Chiral SU(3) Quark Model
• Resonating group method study of kaon-nucleon elastic scattering in the chiral SU(3) quark model
• N K and Delta K states in the chiral SU(3) quark model
• Kaon-nucleon interaction in the extended chiral SU(3) quark model
• Coupled-channels study of Lambda K and Sigma K states in the chiral SU(3) quark model
• Delta K, Lambda K, and Sigma K states in the extended chiral SU(3) quark model
• Study of a possible S=+1 dynamically generated baryonic resonance
• N K Pi molecular state with I=1 and J(Pi)=3/2-

Cited by in corpus (11)

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• Deuteron-like states composed of two doubly charmed baryons
• The bound state problem of S-wave heavy quark meson-aitimeson systems
• Scattering of decuplet baryons in chiral effective field theory
• X(3872) and the bound state problem of $D^0{\bar{D}}^{\ast 0}$ (${\bar{D}}^0{D}^{\ast 0}$) in a chiral quark model
• Possible hadronic molecules composed of the doubly charmed baryon and nucleon
• Preliminary study of the anti-K N interaction in a chiral constituent quark model
• S-wave DK interactions in the chiral SU(3) quark model
• Reveal short range interactions between $u/d$ quarks in the $NN$, $D_{03}$, and $D_{30}$ systems
• A Primary Study of Heavy Baryons Lambda_Q, Xi_Q, Sigma_Q and Omega_Q