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The European Physical Journal A

, Volume 32, Issue 3, pp 293–297 | Cite as

A possible Ωπ molecular state

  • W. L. Wang
  • F. Huang
  • Z. Y. Zhang
  • Y. W. Yu
  • F. Liu
Regular Article - Hadron Physics

Abstract.

The structure of the Ωπ state with isospin I = 1 and spin-parity J P = 3/2- is 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 Ωπ state has an attractive interaction, and in the extended chiral SU(3) quark model such an attraction can make for an Ωπ quasi-bound state with the binding energy of about several MeV.

PACS.

12.39.-x Phenomenological quark models 21.45.+v Few-body systems 11.30.Rd Chiral symmetries 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • W. L. Wang
    • 1
  • F. Huang
    • 2
  • Z. Y. Zhang
    • 3
  • Y. W. Yu
    • 3
  • F. Liu
    • 1
  1. 1.Institute of Particle PhysicsHuazhong Normal UniversityWuhanPRC
  2. 2.CCAST (World Laboratory)BeijingPRC
  3. 3.Institute of High Energy PhysicsBeijingPRC

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