A possible Omega-pi molecular state

Abstract

The structure of Omega-pi state with isospin I=1 and spin-parity J^p=3/2^- are dynamically studied in both the chiral SU(3) quark model and the extended chiral SU(3) quark model by solving a resonating group method (RGM) equation. The model parameters are taken from our previous work, which gave a satisfactory description of the energies of the baryon ground states, the binding energy of the deuteron, the nucleon-nucleon (NN) scattering phase shifts, and the hyperon-nucleon (YN) cross sections. The calculated results show that the Omega-pi state has an attractive interaction, and in the extended chiral SU(3) quark model such an attraction can make for an Omega-pi quasi-bound state with the binding energy of about several MeV.

11 pages, 1 figure

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• Meson-Baryon Scattering Lengths from Mixed-Action Lattice QCD
• The bound state problem of S-wave heavy quark meson-aitimeson systems
• 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
• $Z_b(10650)$ and $Z_b(10610)$ states in a chiral quark model
• Dynamical coupled-channel study of K* K*bar and omega phi states in a chiral quark model
• Possible $D\bar{D}$ and $B\bar{B}$ Molecular states in a chiral quark model
• S-wave DK interactions in the chiral SU(3) quark model
• A study of meson-meson potential in the chiral quark model
• A Primary Study of Heavy Baryons Lambda_Q, Xi_Q, Sigma_Q and Omega_Q